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RCN Lesson 24 - Fraction Multiplication and Division Situations

Last updated over 2 years ago
13 questions
Develop Understanding
Today's Learning Goal: (G5,U3, L17)
  • Solve problems involving multiplication and division with fractions.
Today's Materials:
  • Laptop
  • Laptop charger
  • Pen/Pencil/Paper (optional)
Please complete the Jump Start (activator). You have 5 minutes before we review. This is independent it should be silent.
Reminders:
1. Ready for class
2. No cellphones
3. Volume must be low.
4. Read and follow all directions
5.) Take your bag off and immediately begin the Activator.

Jump Start: Number Talk: Multiply and Divide - (5 min)

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Launch: - (10 min)

I'll Try question 5

We'll Try question 6

You Try question 7!

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The container holds 1/2 gallon of water. It is 3/4 full. How many gallons of water are in the container?

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The container has 1/2 gallon of water. 6 friends split the water equally. How many gallons of water does each friend get?

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The container has 1 gallon of water. Each bottle holds 1/8 of a gallon. How many bottles of water does the container hold?

Activity 1: Info Gap -

(15 min)

(In groups of 2)


Problem Card Instructions:
  1. Silently read your card and think about what information you need to answer the question.
  2. Ask your partner for the specific information that you need.
  3. Explain to your partner how you are using the information to solve the problem.
  4. Solve the problem and explain your reasoning to your partner.
Data Card Instructions:
  1. Silently read the information on your card.
  2. Ask your partner, “What specific information do you need?” and wait for your partner to ask for information. Only give information that is on your card. (Do not figure out anything for your partner!)
  3. Before telling your partner the information, ask, “Why do you need that information?”
  4. After your partner solves the problem, ask them to explain their reasoning and listen to their explanation.

Activity 2: Multiplication or Division - (15 min)

(Groups of 2)

Solve each problem. Explain or show your reasoning.

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If 11 grains of rice weigh 1/3 gram, how much does each grain of rice weigh?

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  1. Mai’s road is 9/10 mile long. She ran 3/4 of the length of her road. How far did she run?

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If each tennis ball weighs 2 1/16 ounces, how much do 9 tennis balls weigh?

Lesson Synthesis: (10 min)'

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What relationships do you see between these problems?

What do we know about the relationship between multiplication and division?

Cool Down: How Much Milk? - (5 min)

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A container has 2 cups of milk in it. How many 1/4 cups of milk are in the container?
(Explain or show your reasoning)

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A container has 2 cups of milk in it. The container is 1/3 full. How many cups does the container hold?
(Explain or show your reasoning.)

Closure Questions:

How do you feel about this material?
How can you tell what operation to use during a word problem?
What is multiplication?
What is division?