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Create a series of 3x5 cards that contain
statements that can be translated into mathematical equations.
Divide the class into small groups or pairs. Give each group one
or more of the cards and ask them to translate their statement into a
mathematical equation. Students are to place the "number" of the
card and their translation(s) on a sheet of paper to hand in.
Number the board from 1-12 in
preparation for the students' responses. Ask a representative from
each group to write their translation(s) on the board.
Now, ask the groups to switch cards. In this second round, the
groups are responsible for checking to see if they agree with the
answers that are on the board. The students must work with
whatever has been placed on the board without criticizing the authors.
Students are to place the "numbers" of these new cards on their same
papers, with a statement of "CORRECT" or "NOT CORRECT". If they
disagree with the answer, they must put a correct response.
Note to teacher:
This activity is best suited to being a graded assignment or extra
credit. Be sure, if you plan to grade the papers, that you jot
down the 12 answers that are on the board.
The cards could also be used to randomly
"deal" questions for a quick quiz or for a class discussion.
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A
certain alloy of copper and silver contains
two-thirds as much silver as nickel.
1 |
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What is the weekly salary of a
salesperson if he/she receives $200 per week
plus 6% of the sales he/she made for that week?
7 |
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A rough estimate of the
temperature can be found by adding forty-five to
one-fourth of the number of times a cricket
chips in one minute.
2 |
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What is the cost of mailing a
package if the rate is 30¢
for each ounce and $1.25 for handling?
8 |
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The class photo's width is
three-fifths of its length.
3 |
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At the mall, soda costs $1.50
and chips cost $2.15. How many sodas and
chips can be purchased for $20?
9 |
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How many copies can be made
for $15 is white paper copies cost 25¢
and colored copies costs 45¢?
4 |
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Architectural plans suggest
that the length of an entrance way should be
one-fourth the length of the house.
10 |
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A recipe for brownies calls
for twice as much flour as sugar.
5 |
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In carbon dioxide, CO2,
there are twice as many oxygen atoms as carbon
atoms.
11 |
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A cell phone charge is $35 for
the phone and $15 a month for the service.
6 |
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What is the total weight of a
trailer loaded with lumber, if the trailer
weighs 800 pounds and the lumber weighs 10
pounds per linear foot?
12 |
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