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Context for this case:
Other versions:
Introduce these guidelines by "touring" them with DNA-extraction
instructions. |
Guidelines
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An easy, focused way to introduce each of these guidelines to
students is to "tour" through them using some authentic
laboratory instructions to illustrate how they work.
For example, Regina Bailey's 13-step process for extracting
DNA from human cheek cells, posted at
http://biiology.about.com/c/ht/00/07/How_Extract_DNA_Human0962932481.htm
does this job nicely.
Many alternatives exist, but Bailey's instructions are
realistic yet simple enough to be workable in one period with
only ordinary supplies.
They provide great guideline cases:
I always introduce instruction-writing guidelines before, not after, the exercises to which they apply. And I suggest explicitly invoking them in every subsequent lesson. They tie the separate exercises together: an easy way to review at the start of each lesson, an overt focus for practice, and a shared evaluation standard. I have even hung the guidelines in the classroom as a 3-by-4-foot poster to provide visual continuity and a tangible resource for student writers.
Many items in the guidelines here overlap with those that Sue Mehlich includes in her Technical Communication: Writing Instructions (Perfection Learning, 1997, 32 pp.), a short high-school technical writing text. Mehlich's most relevant passages are the brief "Guidelines for Writing Instructions" (p. 19, two thirds through the text) and "Planning Strategies for Revising Instructions" (p. 25, almost at the end of her text). Her guidelines also include general writing issues (e.g., grammar) and even graphics issues that fall outside the scope of instruction writing itself. I aim not for an all-purpose composing checklist, but rather for a way to overtly share specific techniques with students for whom those techniques are likely to be unfamiliar (or confusing if left implicit).
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Context for this case:
Prerequisites:
Cognitive Apprenticeship Features:
Supporting References:
Relevant CA Content Standards |
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When I teach this exercise I bring along a new potato to illustrate this "technical term." I point out that with an overt action verb beginning each step, confirming that there are no complex steps to subdivide is easy. And I note that "until they are done" (step 4) could be improved into "until they are soft" to reveal how to detect doneness empirically.
DRIVING-DIRECTIONS ALTERNATIVE:
If you want to preface this recipe analysis with another, even
more basic (but still authentic) case, try end-to-end driving
directions from
Mapquest.
Itemized, icon-marked, step-by-step instructions for driving
(from your home to school, perhaps) are easy to read (an ideal
starter for special education or ESL students) and "naturally"
scaffolded, yet they offer a real-life case where usable
instructions are crucial for success.
Projected or copied large, they provide another colorful, practical,
introductory model for applying the good-instruction guidelines.
Example of GOOD instructions that apply the guidelines.
(1) How to cook new potatoes
Effective features:
VISUALLY DISTINCT LIST
1. Boil:
enough water to cover potatoes OVERT COMMANDS, ACTION VERBS
2. Wash well:
12 new potatoes ORDER CORRECT
3. Drop them into:
boiling water to cover NO COMPLEX STEPS
4. Cook:
covered, NEEDED DETAILS INCLUDED
until they are done,
about 20-30 minutes IRRELEVANT DETAILS EXCLUDED
5. Serve:
with parsley
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Context for this case:
Prerequisites:
Cognitive Apprenticeship Features:
Supporting References:
Relevant CA Content Standards |
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Some students don't revise because they really don't understand how to do it well. This exercise (and the others like it that follow) addresses that problem by externalizing text revision: the guidelines serve as a checklist of possible flaws to look for, and the scaffolding focuses the search for those flaws in each recipe. Effective revision stops being magic when you have a checklist of specific improvements and practice in trying them.
Some students, however, are able to revise their drafts but just don't bother, or they regard revision as a childish, school-only exercise. A look at authentic laboratory practice might motivate these students to make active self-revision a habit. Kalpana Shankar has published (August, 2007) a revealing ethnographic study of writing in an biology laboratory (Order From Chaos: The Poetics and Pragmatics of Scientific Recordkeeping. Journal of the American Society for Information Science and Technology, 58(10):1457-1466, 2007). Researchers there kept a stack of yellow pads handy to "scrawl down where it's all going" as they worked, and a separate set of bound permanent blue record books. Explained one biologist to Shankar
...especially during an experiment [what I write] is extremely messy and difficult to read and if I went back to it myself many days later I'de probably have difficulty interpreting it. So I very shortly write it up into my main laboratory books...it's much clearer after that (p. 1461).Hence, among these real-life scientists, careful scheduled text revision is in play even from the start to make usable research records emerge from bench-science activity.
(2) How to make chili mac
Problems/solutions:
1. Brown 1 lb. of ground beef
-----
|-----------------------------------PROBLEM:
SOLUTION:
2. You can now add 1 16-oz. can----------PROBLEM:
of tomatoes and 1 tsp. of SOLUTION:
chili powder
3. Add 4 oz. of cooked macaroni
------
|---------------------PROBLEM:
SOLUTION:
4. Simmer for 15 minutes,
stirring occasionally.
Annotated version:
1. Brown 1 lb. of ground beef
-----
|-----------------------------------PROBLEM: COMPLEX STEP
SOLUTION:
for new cooks, "brown" will need
to be DIVIDED into SUBSTEPS
(unwrap the meat,
crumble into skillet,
cook on high heat,
stir until red disappears)
2. You can now add 1 16-oz. can----------PROBLEM: NO OVERT COMMAND
of tomatoes and 1 tsp. of SOLUTION: Add the following...
chili powder 1 16-oz. can of tomatoes
1 tsp. chili powder
3. Add 4 oz. of cooked macaroni
------
|---------------------PROBLEM: cooked = HIDDEN STEP
PROBLEM: WRONG FIRST TASK
SOLUTION:
FIRST step should be
"cook 4 oz. of macaroni"
(possible SUBSTEPS are:
boil water,
add 1 teaspoon of oil,
add raw macaroni,
boil until tender, 7 min.)
4. Simmer for 15 minutes,
stirring occasionally.
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Context for this case:
Prerequisites:
Cognitive Apprenticeship Features:
Supporting References:
Relevant CA Content Standards |
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Example of good instructions with SAFETY WARNINGS.
(3) How to boil water in a microwave oven.
1. Fill
a nonmetalic cup or bowl
with warm water.
2. Insert
a nonmetalic spoon or stir stick
diagonally into the cup.
PROBLEM: SAFETY HAZARD
SOLUTION:
WARNING--without this, the
water may appear not to boil,
then vaporize suddenly and
severely burn your face
when you check it.
3. Set
the microwave oven to
3 minutes on HIGH
4. Place
the cup of water into the oven
and close the door.
5. Start
the oven.
PROBLEM: SAFETY HAZARD
SOLUTION:
WARNING--never put your
face close to the cup to
check if the water is
boiling.
Annotated version:
Example of good instructions with SAFETY WARNINGS.
(3) How to boil water in a microwave oven.
1. Fill
a nonmetalic cup or bowl
with warm water.
2. Insert
a nonmetalic spoon or stir stick
diagonally into the cup.
WARNING--without this, the
water may appear not to boil,
then vaporize suddenly and
severely burn your face
when you check it.
3. Set
the microwave oven to
3 minutes on HIGH
4. Place
the cup of water into the oven
and close the door.
5. Start
the oven.
WARNING--never put your
face close to the cup to
check if the water is
boiling.
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Context for this case:
Prerequisites:
Cognitive Apprenticeship Features:
Supporting References:
Relevant CA Content Standards |
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STUDENT VERSIONS:
Unlike Exercises 1, 2, and 3, both student version 4A and 4B are
unworked examples. Both have problem locations highlighted by
scaffolding. Version 4B incorporates the solutions to 4A's three
problems in its own text and exposes four fresh problems in turn.
I suggest using the word count exercise as a revealing transition from
4A to 4B.
ANNOTATED VERSION:
This version shows the solutions for both the 4A and the 4B problems
integrated into the same instruction text (without scaffolding).
This is the goal toward which student editing of 4a and 4B leads.
(A second word count reveals that the final version has about 52
words, up from too-short version 4B but still less than 60% as
large as 4A.)
(4A) How to make cranberry sauce (first version) You can make a very nice whole cranberry sauce by placing 2 cups of water in a saucepan and then stirring into the water 2 cups of sugar until the sugar itself dissolves. Next boil the----------------PROBLEM: [not an overt list] the water-sugar mixture for SOLUTION: 5 minutes. Taking about 4 cups of whole, raw cranberries---------PROBLEM: [not a command] (which is about the same as SOLUTION: 1 pound by weight) and washing them lets you add them to the boiled solution. If you simmer them-----------------------PROBLEM: [many extra words] (uncovered, very gently, SOLUTION: without stirring) until thick, about 5 minutes, you will have cranberry sauce.Student version 4B:
(4B) How to make cranberry sauce (second version)
Place
in a saucepan and
stir until dissolved:
some water---------------------------PROBLEM: [how much?]
enough sugar-------------------------SOLUTION:
Boil
for a while--------------------------PROBLEM: [how long?]
SOLUTION:
Wash
and add to the sugar water
4 cups of raw cranberries------------PROBLEM: [how to convert?]
SOLUTION:
Simmer
until the sauce is thick,------------PROBLEM: [what manner?]
about 5 minutes SOLUTION:
Annotated version:
(4) How to make cranberry sauce (combined version)
Place
in a saucepan and
stir until dissolved:
2 cups of water
2 cups of sugar
Boil
for 5 minutes
Wash
and add to the sugar water
4 cups of raw cranberries
(about the same as 1 pound)
Simmer
uncovered, very gently,
without stirring,
until the sauce is thick,
about 5 minutes
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Context for this case:
Prerequisites:
Cognitive Apprenticeship Features:
Supporting References:
Relevant CA Content Standards |
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(5) How to make pancakes The secret to good pancakes--------------PROBLEM: is to turn them only once. SOLUTION: Pancakes can be made from four ingredients (1 cup of---------------PROBLEM: baking mix, 3/4 cup of water, SOLUTION: 1 egg, and 1 tablespoon of oil). You will need to combine----------PROBLEM: the dry and wet ingredients SOLUTION: to start. Then mix them all until just moistened (overmixing is not good)-----------------PROBLEM: In order to cook the SOLUTION: pancake batter, try spooning it onto a hot skillet. The first side should be heated until--------------PROBLEM: bubbles form and just SOLUTION: begin to burst (2-3 minutes). The second side cooks for about half as long as the first side.Annotated version (1):
(5) How to make pancakes The secret to good pancakes--------------PROBLEM: WRONG ORDER is to turn them only once. SOLUTION: Move this step later Pancakes can be made from four ingredients (1 cup of---------------PROBLEM: STEPS NOT EASY TO FIND baking mix, 3/4 cup of water, SOLUTION: Use list format 1 egg, and 1 tablespoon of oil). You will need to combine----------PROBLEM: IRRELEVANT TEXT, the dry and wet ingredients TWO STEPS TOGETHER to start. Then mix them all SOLUTION: Trim unneeded words, until just moistened subdivide the steps (overmixing is not good)-----------------PROBLEM: TROUBLESHOOTING TIP In order to cook the SOLUTION: Make overt warning pancake batter, try spooning it onto a hot skillet. The first side should be heated until--------------PROBLEM: NOT OVERT COMMAND bubbles form and just SOLUTION: Use action-verb format begin to burst (2-3 minutes). The second side cooks for about half as long as the first side.Annotated version (2):
(5) How to make pancakes
Place in a bowl:
1 cup of baking mix
Add:
3/4 cup of water
1 egg
1 tablespoon of oil
Mix
until just moistened
WARNING--do not stir
aggressively.
Spoon
the mixture onto a
hot skillet
Bake one side
until bubbles form
and just burst
(2-3 minutes)
Turn
each pancake only once
Finish
baking the other side
(about half as long
as the first side)
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Context for this case:
Prerequisites:
Cognitive Apprenticeship Features:
Supporting References:
Relevant CA Content Standards |
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(6) Stuffed baked acorn squash
1. Cut into small pieces
1 apple, with skin
1 orange, without skin----------------PROBLEM:
SOLUTION:
2. Mix
fruit pieces in a bowl with
1 tablespoon margarine
3. Cut
an acorn squash in half---------------PROBLEM:
SOLUTION:
4. Remove
the soft, stringy insides
and seeds from each half
with a spoon
5. Into each clean half------------------PROBLEM:
squash you can now start SOLUTION:
packing half of the
fruit mixture.
6. Bake
at 350 degrees for 1 hour
7. Before you put the squash-------------PROBLEM:
into the oven, place the SOLUTION:
halves on a baking dish
and add 1/2 cup of water.
Annotated version:
(6) Stuffed baked acorn squash
1. Cut into small pieces
1 apple, with skin
1 orange, without skin----------------PROBLEM: HIDDEN STEP
SOLUTION: (FIRST step =
"Peel 1 orange")
2. Mix
fruit pieces in a bowl with
1 tablespoon margarine
3. Cut
an acorn squash in half---------------PROBLEM: NEEDED DETAIL MISSING
SOLUTION: add
"from tip to stem, lengthwise"
4. Remove
the soft, stringy insides
and seeds from each half
with a spoon
5. Into each clean half------------------PROBLEM: NO OVERT COMMAND
squash you can now start SOLUTION: reword--
packing half of the Pack
fruit mixture. half of the fruit mixture
into each clean half squash.
(30% fewer words)
6. Bake
at 350 degrees for 1 hour
7. Before you put the squash-------------PROBLEM: WRONG ORDER
into the oven, place the SOLUTION: make an overt command
halves on a baking dish and move BEFORE step 6
and add 1/2 cup of water. (could also be 2 steps)
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Context for this case:
Prerequisites:
Cognitive Apprenticeship Features:
Supporting References:
Relevant CA Content Standards |
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(7) Butterscotch brownies
Into a saucepan go-----------------------PROBLEM:
1 cup of SOLUTION:
brown sugar
1/4 cup of
melted butter----------------------PROBLEM:
SOLUTION:
Remove from heat and---------------------PROBLEM:
stir in SOLUTION:
1 egg
1 teaspoon vanilla
Combine in a mixing bowl
some flour---------------------------PROBLEM:
1 teaspoon baking powder SOLUTION:
1/2 teaspoon salt
After
you stir the dry ingredients---------PROBLEM:
into the butter/sugar mixture, SOLUTION:
then add 1 cup of chopped nuts.------PROBLEM:
SOLUTION:
Pour
into a 9-by-9-inch
floured baking pan.------------------PROBLEM:
SOLUTION:
Bake
for 20-25 minutes in a
350-degree preheated oven.-----------PROBLEM:
SOLUTION:
Annotated version:
(7) Butterscotch brownies
Into a saucepan go-----------------------PROBLEM: NO OVERT COMMAND
1 cup of SOLUTION:: (see next problem)
brown sugar
1/4 cup of
melted butter----------------------PROBLEM: HIDDEN STEP GOES FIRST
SOLUTION: combined solution--
Melt in a saucepan
1/4 cup butter
Stir
into the melted butter
1 cup sugar
Remove from heat and---------------------PROBLEM: TWO STEPS COMBINED
stir in SOLUTION:
1 egg Remove from heat.
1 teaspoon vanilla Stir in...
Combine in a mixing bowl
some flour---------------------------PROBLEM: NEEDED DETAIL MISSING
1 teaspoon baking powder SOLUTION: specify
1/2 teaspoon salt (1/2 cup flour)
After
you stir the dry ingredients---------PROBLEM: NO OVERT COMMAND
into the butter/sugar mixture, SOLUTION: Stir in the dry...
then add 1 cup of chopped nuts.------PROBLEM: TWO STEPS COMBINED
SOLUTION: Add
1 cup of chopped nuts
Pour
into a 9-by-9-inch
floured baking pan.------------------PROBLEM: HIDDEN STEP
SOLUTION: Grease and flour
a 9-by-9-inch pan.
Pour in the batter.
Bake
for 20-25 minutes in a
350-degree preheated oven.-----------PROBLEM: HIDDEN STEP
PROBLEM: GOES FIRST
SOLUTION: Make the first step
"Preheat oven to 350 degrees"
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Context for this case:
Prerequisites:
Cognitive Apprenticeship Features:
Supporting References:
Relevant CA Content Standards |
|
The STUDENT and ANNOTATED versions of Exercise 8 (like
Exercise 1) are the same, intended to show well-designed text and
art complementing each other to meet reader needs.
These specific moves come from a much larger array of techniques
known to make technical illustrations effective; for more examples
(many related to map design), see Edward Tufte,
Envisioning Information
(Cheshire, CT: Graphics Press, 1990).
(This exercise has been generously adapted for this project by artist
Brett S. Clark from an idea on p. 109 of Bill Gray's
influential Studio Tips, Van Nostrand Reinhold, New York, 1976.)
1. Keep a stack of small (3-by-5-inch) stiff cards near where you use rubber cement (Fig. 1).
2. WARNING: if rubber cement spills, act fast (Fig. 2).
3. Stand the container upright and off to the side. 4. Gather the spilled cement by using two of the cards, one in each hand, as shown (Fig. 3).
a. If the cement spilled on a clean surface, scoop the cement back into the original container (repeat until it is all recovered, Fig. 4).
b. If the cement spilled on a dirty area, scoop the cement on to a piece of newspaper or into a disposable container. Deposit it in a trash can.
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Context for this case:
Prerequisites:
Cognitive Apprenticeship Features:
Supporting References:
Relevant CA Content Standards |
|
(9) How to join two sheets of heavy paper or cardboard
along an irregular curve.
1. Paste down (or rubber cement)
the first sheet on a board (Fig. 1).----PROBLEM:
SOLUTION:

2. Paste the second sheet partly
over the first and mark the
irregular curve on it (Fig. 2).---------PROBLEM:
Carefully cut along the joint SOLUTION:
through both sheets, removing
the extra pieces of paper that
result.

3. Reset the sheets along the cut
(Fig. 3) and you should have a----------PROBLEM:
perfect joint. SOLUTION:

Annotated version:
(9) How to join two sheets of heavy paper or cardboard
along an irregular curve.
1. Paste down (or rubber cement)
the first sheet on a board (Fig. 1).----PROBLEM: USELESS DIAGRAM,
like irrelevant text
SOLUTION: omit
2. Paste the second sheet partly
over the first and mark the
irregular curve on it (Fig. 2).---------PROBLEM: COMPLEX STEP
Carefully cut along the joint... SOLUTION: subdivide by action,
add substep diagrams--
(a) Paste two sheets partly overlapping (Fig. A).

(b) Draw curve on top sheet (to fit the
overlap, Fig. B).
(c) Cut along the curve through both
sheets (Fig. C).

(d) Remove extra pieces from above,
below (Fig. D).

3. Reset the sheets along the cut
(Fig. 3) and you should have a----------PROBLEM: NEEDED DETAIL MISSING
perfect joint. SOLUTION: add step (d) above
before this one
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Context for this case:
Prerequisites:
Cognitive Apprenticeship Features:
Supporting References:
Relevant CA Content Standards |
|
(10) How to make an oval template.
After cutting an oval hole in a sheet------PROBLEM:
of cardboard, sand its edges with SOLUTION:
a small piece of sandpaper (Fig. 1).

|
---------------------------------PROBLEM:
SOLUTION:
Smooth the curve but don't overdo it-------PROBLEM:
or you may distort the shape SOLUTION:
(Fig. 2).

Spray both sides with varnish to
protect the template.
Place small strips of cardboard or
tape around the bottom side of
the oval so that ink will not
blot when you draw (Fig. 3).

If you use a technical pen, be sure--------PROBLEM:
to hold it vertically against SOLUTION:
the edge of the oval (Fig. 4).

Annotated version:
(10) How to make an oval template.
After cutting an oval hole in a sheet------PROBLEM: COMPLEX STEP
of cardboard, sand its edges... SOLUTION: subdivide, add
details with diagrams

|
---------------------------------PROBLEM: USELESS DIAGRAM,
LIKE IRRELEVANT TEXT
SOLUTION: omit it
(a) Draw an oval on one side of a sheet
of stiff cardboard (Fig. A).

(b) Cut carefully around the drawn curve
to make an oval hole (Fig. B).

Smooth the curve but don't overdo it-------PROBLEM: WARNING NEEDED
or you may distort the shape... SOLUTION: signal clearly
WARNING: work gently so you smooth the
curve without distoring it (Fig. C).

Spray both sides with varnish to
protect the template.
Place small strips of cardboard or
tape around the bottom side of
the oval so that ink will not
blot when you draw (Fig. D).

If you use a technical pen, be sure--------PROBLEM: WARNING NEEDED
to hold it vertically against... SOLUTION: signal clearly
WARNING: always hold your technical pen
vertically against the edge of the
oval (Fig. E).

(11) How to clean mildew (mold) from household surfaces
Combine
in a plastic bucket or pail
of any color or shape----------------PROBLEM:
the ingredients for a SOLUTION:
mold-killing solution:
warm water---------------------------PROBLEM:
liquid chlorine bleach SOLUTION:
powdered laundry detergent
Fill
a plastic spray bottle
with the cleaning solution
and then spray it onto---------------PROBLEM:
the moldy surface. SOLUTION:
When the black mildew
turns white, it is dead.
The best thing
to do next is to rinse---------------PROBLEM:
the sprayed area with SOLUTION:
fresh water and towel
dry or ventilate thoroughly.
Take precautions:------------------------PROBLEM:
(a) wear rubber gloves SOLUTION:
when you work with
the solution.
(b) test it on an obscure
area before you spray
a large, painted surface.
Annotated version:(11) How to clean mildew (mold) from household surfaces
Combine
in a plastic bucket or pail
of any color or shape----------------PROBLEM: IRRELEVANT DETAILS
the ingredients for a SOLUTION: omit them, shorten
mold-killing solution:
warm water---------------------------PROBLEM: NEEDED DETAILS MISSING
liquid chlorine bleach SOLUTION: specify how much--
powdered laundry detergent 3 quarts water
1 quart bleach
1/3 cup detergent
Fill
a plastic spray bottle
with the cleaning solution
and then spray it onto---------------PROBLEM: TWO STEPS COMBINED
the moldy surface. SOLUTION: separate--
When the black mildew Fill the bottle...
turns white, it is dead. Spray the surface...
The best thing
to do next is to rinse---------------PROBLEM: NO OVERT COMMAND(s)
the sprayed area with SOLUTION: action verbs--
fresh water and towel Rinse...
dry or ventilate thoroughly. Towel dry...
Take precautions:------------------------PROBLEM: WARNINGS BEFORE USE
(a) wear rubber gloves SOLUTION: make these the FIRST
when you work with steps, not last
the solution.
(b) test it on an obscure
area before you spray
a large, painted surface.
(12) How to store and retrieve files
1. If you have a binary file,
be sure to request BINARY mode
after you start.----------------------PROBLEM:
SOLUTION:
2. You can begin by running--------------PROBLEM:
NFT, a program that SOLUTION:
automatically opens a
connection to storage.
3. The PUT command is one of
over a dozen that NFT offers.---------PROBLEM:
Store a file by typing SOLUTION:
put filename
4. Retrieve a stored file
by typing
get filename
unless you already have a-------------PROBLEM:
file by that name, in which SOLUTION:
case NFT will print the message
"cannot clobber existing file."
Then you have a choice of-------------PROBLEM:
typing SOLUTION:
clobber
to allow overwriting or
get filename newname
to change the name of the
retrieved file as it arrives.
5. End NFT
by typing quit
Annotated version:(12) How to store and retrieve files
1. If you have a binary file,
be sure to request BINARY mode
after you start.----------------------PROBLEM: WRONG ORDER
SOLUTION: move after step 2
2. You can begin by running--------------PROBLEM: NO OVERT COMMAND
NFT, a program that SOLUTION: Run NFT, a program...
automatically opens a
connection to storage.
3. The PUT command is one of
over a dozen that NFT offers.---------PROBLEM: IRRELEVANT TEXT
Store a file by typing SOLUTION: delete extra words--
put filename Store a file...
4. Retrieve a stored file
by typing
get filename
unless you already have a-------------PROBLEM: TROUBLESHOOTING TIP
file by that name, in which SOLUTION: add a warning
case NFT will print the message (see next problem)
"cannot clobber existing file."
Then you have a choice of-------------PROBLEM: COMPLEX STEP
typing SOLUTION: subdivide in warning--
clobber WARNING--NFT automatically
to allow overwriting or prevents you from
get filename newname writing over a file
to change the name of the of the same name.
retrieved file as it arrives. Either
(a) authorize the over-
5. End NFT write by typing
by typing quit clobber or
(b) change the retrieved
file's name by
typing
get filename newname
Removing Wax from Carpet You can start by trying to scrape out as much wax as possible with a dull knife (such as a butter knife or a putty knife). But before you scrape, it is best to chill the spilled wax with an ice bag (or a bag of frozen vegetables). The next step is to cover the remaining wax residue with 2 or 3 paper towels. Set an electric iron to its lowest temperature. Then it is possible to take the warm iron and move it over the paper towels that cover the wax, to absorb some melted wax with each pass. When they become saturated with wax, change the paper towels and then repeat until the paper towels absorb no more wax. Scrub the waxed carpet area with a rag dampened in mineral spirits. Then scrub the carpet area again with mild detergent after you dry it with more paper towels. Rinsing with clean water will be necessary too. And you will also have to dry the carpet with a hair dryer or fan, fluffing the carpet as needed. One possible problem during this whole cleaning process is that different carpet fibers melt at different temperatures. An inconspicuous place should be tested by moving the warm iron over paper towels to make sure that the carpet will not melt. A second possible problem is that you might put too much mineral spirits on the rag. Do not soak the rag; just moisten it.Annotated version (1):
Removing Wax from Carpet [WITH PROBLEMS NOTED]
--NO LIST FORMAT
You can start by trying to scrape out
as much wax as possible with a dull --NO OVERT COMMAND
knife (such as a butter knife or a
putty knife).
But before you scrape, it is best to --WRONG ORDER
chill the spilled wax with an ice bag
(or a bag of frozen vegetables).
The next step is to cover the remaining --IRRELEVANT TEXT
wax residue with 2 or 3 paper towels. --NO OVERT COMMAND
Set an electric iron to its lowest
temperature.
Then it is possible to take the warm iron --IRRELEVANT TEXT
and move it over the paper towels that --NO OVERT COMMAND
cover the wax, to absorb some melted wax
with each pass.
When they become saturated with wax, --COMPLEX STEP
change the paper towels and then repeat
until the paper towels absorb no more wax.
Scrub the waxed carpet area with a rag
dampened in mineral spirits. --HIDDEN STEP
Then scrub the carpet area again with
mild detergent after you dry it with --WRONG ORDER
more paper towels.
Rinsing with clean water will be --NO OVERT COMMAND
necessary too.
And you will also have to dry the carpet --IRRELEVANT TEXT
with a hair dryer or fan, fluffing --NO OVERT COMMAND
the carpet as needed.
One possible problem during this whole --MISPLACED WARNINGS
cleaning process is that different carpet
fibers melt at different temperatures.
An inconspicuous place should be tested
by moving the warm iron over paper towels
to make sure that the carpet will not melt.
A second possible problem is that you
might put too much mineral spirits on the
rag. Do not soak the rag; just moisten it.
Annotated version (2):Removing Wax from Carpet [AN IMPROVED VERSION]
1. Chill
the spilled wax with an ice bag
(or a bag of frozen vegetables).
2. Scrape
out as much wax as possible with a dull knife
(such as a butter or putty knife).
3. Cover
the remaining wax residue with 2 or 3 paper towels.
4. Set
an electric iron to its lowest temperature.
WARNING: carpet fibers melt at different
temperatures. Test the iron setting by moving
the warm iron over paper towels in an
inconspicuous place to make sure that the carpet
will not melt.
5. Move
the warm iron over the paper towels that cover the wax,
to absorb some melted wax with each pass.
6. Change
the paper towels when they become saturated
with wax.
7. Repeat
steps 5 and 6 until the paper towels absorb no more wax.
8. Dampen
a rag with mineral spirits.
WARNING: do not soak the rag; just moisten it.
9. Scrub
the waxed carpet area vigorously.
10. Dry
with more paper towels.
11. Scrub
again with mild detergent.
12. Rinse
with clean water.
13. Dry
with a hair dryer or fan, fluffing the carpet as needed.
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Context for this case:
Prerequisites:
Cognitive Apprenticeship Features:
Supporting References:
Relevant CA Content Standards |
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(14) How to draw a spiral. Fig. 1Annotated version:
Fig. 2
Fig. 3![]()
(14) How to draw a spiral. 1. Cut a short vertical slit in the edge of the plastic bottle cap (Fig. 1, left).2. Tie a knot in one end of the thread to make a loop, following the pattern shown in Fig. 1, right. 3. Insert the sharpened end of the pencil into the loop of thread (Fig. 1, right). 4. Insert the other end of the thread into the slit in the bottle cap (by pulling it through the cut in the rim, Fig. 1, left). 5. Place the bottle cap (with thread and pencil attached) on the sheet of paper where you want the center of the spiral (Fig. 2).
6. Wind the thread around the rim of the bottle cap, as in Fig. 2, until the loop and pencil touch the rim. 7. Draw the spiral (Fig. 3): (a) Hold the bottle cap with one hand. (b) Unwind the thread slowly, using the pencil tip in your other hand to trace the spiral.
8. Remove the bottle cap and pencil.
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Context for this case:
Prerequisites:
Cognitive Apprenticeship Features:
Supporting References:
Relevant CA Content Standards |
|
SCHLOSSER'S CLAIMS:
In Fast Food Nation, Eric Schlosser makes many wide-ranging
empirical claims, including claims about
A HELPFUL WEBSITE:
The California State Library maintains a useful public-service
World Wide Web
"portal" (site with organized links to many other sites) to help
students become acquainted with reputable online reference sources.
Called Librarians' Internet Index (LII at URL
lii.org), it offers a searchable, hierarchical,
encyclopedia-like set of alphabetized topics
(good for checking specific claims in biology or economics, for
example).
While the primary point of this exercise is to
draft, evaluate, and improve
fairly long instructions (which happen to be instructions for
searching the Internet), a secondary point is to introduce students
to this reliable, practical information portal.
HOW TO USE THIS EXERCISE:
(A) Note Taking.
The basic plan here is to practice in advance the sequence of actions needed to check two of Schlosser's claims by using LII-linked Internet resources, model that search for students during class, and have them capture what they see in structured notes that they could edit into useful instructions for others.
- Identify
the claims that you want to verify online. I used Schlosser's claims that
(1) "E. coli O157:H7 was most likely responsible for some human illnesses thirty or forty years ago. But the rise of huge feedlots, slaughterhouses, and hamburger grinders seems to have provided the means for this pathogen to become widely dispersed in the nation's food supply." (p. 196)
(2) "In 1970, Americans spent about $6 billion on fast food; in 2001, they spent more that $110 billion." (p. 3)- Practice
using LII to track down reputable websites that address your target claims. LII and the sites to which it links vary somewhat over time, so the exact details shown here may need adjustment to reflect the current configuration.- Capture
your steps in instructions that you can then use
(1) as a guide, to reproduce smoothly and reliably during class, and
(2) as a rubric, to evaluate student responses to the intentionally flawed instructions for this search that you later distribute (below).
For example, here are my instructions (as of 2007) for checking the two specific claims mentioned above:[Use LII to check facts in biology/economics] Start your browser. Request lii.org. Type lii.org into the browser's Address field. Press ENTER (or RETURN). The top level LII topics and a few subtopics for each appear on the LII home page. Scroll down to see those that do not fit in your browser window. E. coli O157:H7 Find the Health heading on the LII home page (topics are alphabetical). Select (click on) Diseases and Conditions under Health. More subtopics appear (under Health) in the left-hand column. Select Infectious Diseases from the list of new subtopics. Additional disease subtopics appear, plus "more subtopics" head. Select More Subtopics. Fifty specific diseases appear in the left-hand column. Select Foodborne Diseases from the alphabetical list Twenty-five one-paragraph website descriptions appear (right-hand column), each with a descriptive title. Select the fifth website, called CDC: Escherichia coli O157:H7 (click on its title). The CDC FAQ website appears, offers branches. Inflation rate Use the LII search engine (since location among topics is not obvious). Type inflation rate into the LII "Search entire collection for" field just under the home-page banner. WARNING: do NOT surround search term with quotes, even though it is two words, because LII always returns zero hits for quoted terms. Select the third reported website--"How much is that?" Select the first choice on its home page--"Five ways to compare the worth of a United States dollar" Type the target year, original year, and dollar amount into the conversion form fields. Click on the Submit Query button.- Introduce
Michael Hoey's matrix approach to taking notes on a process (or, as Hoey says in Textual Interaction, on a "happening"). I give each student a blank sheet of grid-ruled paper on which these column (top) and section (left) headings appear:ACTION ITEM Get Started Check E. coli Check inflationUnder the "ACTION" column go the verbs for each step observed (e.g., "find"), while under the "ITEM" column goes the object (e.g., "the health heading...") of that action. The stub heads along the left side organize the notes into phases (sequences of topical clusters). With this framework, note taking becomes a structured, scaffolded way to notice and spell out the actions and focal items for each step in a complex process. This build-a-matrix technique lets students actively practice a crucial enabling skill, not just hear about it. And it captures relevant information needed to create good instructions for others.- Demonstrate
the use of LII to check claims by walking through your practiced search as students watch (large-screen projection of the interactive browser session, or use of large monitors, is the most dramatic way to do this, but a series of big, posted screen shots can also work well in classrooms with no Internet access). You can offer running commentary on the search process as well as on your own version of the note-taking matrix (I use a flip chart so that I can move it and point to it later) that you fill in with student help as you go along. This models both the fact-check search and taking notes on it at a pace that you can control to suit class needs.- Review
what has happened so far, in light of the good-instruction guidelines.
(1) Students with adequate skills can go forward to edit their notes into formal instructions to share (perhaps working in small groups, or as homework).
(2) Less prepared students can now use their notes (or if really inadequate, your public set) to find the flaws in an already drafted set of instructions for this LII search (next item below).
(B) Flaw Detection.
Even though this draft is two to three times larger than most of the previous exercises, students will find that their past practice in detecting flaws in instructions applies directly to this bigger task. The instruction-writing guidelines "scale up" easily to handle this long case, if students patiently work through it piecewise, just as real editors would on a real job. Their own "matrix of notes" (built above) helps here too, another authentic aspect of this bigger case. I invite students to find as many ways to improve this draft as they can. A side benefit is that while they use the line numbers (left edge) to tell specifically where they think improvements are needed, students gain experience with the edge-numbered format for focal text that appears often on the Language Arts portion of the California High School Exit Examination (CAHSEE).
(C) Fact-Checking Applied.
After the class has improved these instructions, I apply them by revealing the actual fact-checking results for the two Schlosser claims that started the search. I always include (at least) one claim that online research disconfirms (in this case, Schlosser ignored inflation in his cross-decade dollar comparisons).
1 You can check facts on the Internet by using a web browser. 2 The Librarians' Internet Index (LII) is a reliable place 3 to check facts in specific subject areas 4 (such as biology and economics). 5 LII is organized in layers by topic, 6 from general to more and more specific. 7 Starting the web browser (such as Internet Explorer) 8 on your computer is the first step. 9 10 Requesting the LII website requires typing lii.org into the 11 Address or Location field near the top of the browser window. 12 Then you can select (click on) the topic or subtopic on which 13 you want more information from the list on LII's home page. 14 Don't forget to press ENTER (or RETURN) after you type lii.org. 15 If your browser window is short, you must scroll down 16 to see the full list of topics covered. 17 18 The alphabetical list of topics on the LII home page contains 19 a heading called Health. 20 Select (click on) the Diseases and Conditions subheading 21 under Health and when additional subtopics appear in the 22 left-hand column, 23 select Infectious Diseases from the new subtopics. 24 Select Foodborne Diseases from the list of 25 fifty diseases that appears in response to your 26 picking More subtopics from the short list of subheads 27 under the Infectious Diseases topic revealed above. 28 This could be very relevant information. 29 Under Foodborne Diseases are one-paragraph 30 descriptions of 12 websites covering different pathogens. 31 The fifth one is called 32 CDC: Escherichia coli O157:H7 33 and you can click on its title to retrieve biological 34 and medical details on E. coli. 35 36 Use the LII search engine instead of the topic headings 37 to find inflation-rate information, since its place 38 among the topics is not obvious. 39 If you wish you can type the term inflation rate 40 into the field marked "Search entire collection for" 41 found just under the banner on the LII home page. 42 It is strongly suggested that you do not surround 43 your search term with quotation marks, because the 44 LII search engine always returns zero hits for 45 quoted terms. 46 Select the proper website from the list of three returned. 47 Select the first choice there, called "Five ways to 48 compare the worth of a United States dollar." 49 Click in the Submit Query button, but 50 before that type the target year, original year, 51 and amount into the conversion form.