Turquoise Bunk • Grades 2–3 • Lesson 4
the snacks, or divide them into equal parts. Then we will meet and share with our partners. Give campers individual think time, then have them turn and talk about how the granola bar and the watermelon slice could be divided between two people. Listen in for different strategies.
Learner Supports Multilingual Learners and Range of Learners prompts are integrated throughout each lesson, providing teachers with options to provide more instruction or challenge to meet each camper’s individual needs.
MULTILINGUAL LEARNERS Have campers explain the steps for partitioning a rectangle or circle into equal parts. Provide sentence frames: First, I review the problem, so I know ______. Next, I decide how many equal parts I need by ______. Then, I ______.
Ask campers to share their strategies, and then use them to solve the problem. (Possible strategies include guessing, drawing lines, folding, using a ruler, creating rows and columns, or using a cookie cutter.) Invite campers to complete Problem 1 with a partner. Then have volunteers share strategies for how they partitioned each snack.
Model different strategies on the board. Then ask: How many parts did you divide each snack into? Why? Are those parts the same size? How do you know? We divide each snack into two equal parts because there are two people sharing. What could we call each person’s share? Let campers offer suggestions, then continue. When a shape is divided into two equal parts, each part, or share, is called a half. Then have campers write the answer on their worksheets. Guide campers to look at Problem 2 on Worksheet 1. Repeat the previous steps, making sure campers understand that sharing a whole equally with three people means dividing it into three equal parts and each part is called a third. Guide campers to look at Problem 3 on Worksheet 2. Finally, let’s think about another problem: Another day, four friends want to share a slice of watermelon. How can the watermelon slice be shared equally by four people? What part of the whole slice is each share? Again, repeat the steps, making sure campers understand that sharing a whole equally with four people means dividing it into four equal parts and each part is called a fourth. Integrate Guide campers to Problem 4 on Worksheet 2. Have campers turn and talk about how they might determine whether or not a picture shows equal shares. Campers should understand that each granola bar is split into two parts, but not necessarily into equal parts. Camper suggestions may include measuring with a ruler, estimating with their fingers, using same-size tiles, or cutting out the parts for each granola bar and comparing the parts. Then have campers circle the granola bar that shows equal shares and write or draw to explain how they know. Check for Understanding Review these questions with campers to land on the key points of the lesson. • Which granola bar shows equal parts? How do you know?
Integrate This exercise provides opportunities to integrate concepts into an additional problem or two.
• How many equal parts are shown? What is the name of each part? • How else could we divide a granola bar into two equal parts? • What strategy can you use to find if a decomposed shape has equal parts? • What strategy can you use to partition a shape?
Check for Understanding After campers discuss their strategies and complete an activity sheet problem, the leader reviews the Math Power lesson with a Check for Understanding to confirm that all campers understand the lesson.
Lesson 4 Unit: Belonging | 39
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2/1/24 3:20 PM
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