Unit 5, Lesson 10
Multiply!
Grade 7
10.1
Warm-up
Which three go together? Why do they go together?
A
B
C
D
10.2
Activity
Your teacher will give you either a problem card or a data card. Do not show or read your card to your partner.
If your teacher gives you the problem card:
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Silently read your card and think about what information you need to answer the question.
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Ask your partner for the specific information that you need. “Can you tell me ?”
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Explain to your partner how you are using the information to solve the problem. “I need to know because . . . .”
Continue to ask questions until you have enough information to solve the problem.
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Once you have enough information, share the problem card with your partner, and solve the problem independently.
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Read the data card, and discuss your reasoning.
If your teacher gives you the data card:
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Silently read your card. Wait for your partner to ask for information.
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Before telling your partner any information, ask, “Why do you need to know ?”
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Listen to your partner’s reasoning, and ask clarifying questions. Only give information that is on your card. Do not figure out anything for your partner!
These steps may be repeated.
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Once your partner says they have enough information to solve the problem, read the problem card, and solve the problem independently.
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Share the data card, and discuss your reasoning.
10.3
Activity
Your teacher will give you a set of cards. Each card contains an expression.
Sort the expressions into groups based on their values. There will be 3 cards in each group. Be prepared to explain how you know where each expression belongs.
10.4
Activity
Evaluate the expressions in one of the columns. Your partner will work on the other column.
Discuss your thinking with your partner after you finish each row. Your answers in each row should be the same. If you disagree, work to reach an agreement.
| column A | column B |
|---|---|
Student Lesson Summary
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A positive number times a positive number always results in a positive number.
For example, .
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A negative number times a negative number also always results in a positive number.
For example, .
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A negative times a positive number or a positive number times a negative number always results in a negative number.
For example, .
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A negative number times a negative number times a negative number also always results in a negative number.
For example, .
None