Turquoise Bunk • Lesson 8 • Rising Third Graders
MATH POWER: Compose Once to Add 40 MIN
Math Power
Math Power is the central math lesson and is built on a four-part framework:
Introduce In this lesson, campers will make a 10 to add within 200 using one composition. Distribute Math Power Worksheets 1 and 2 and base-ten blocks to campers. Campers, there are places where you can go to pick your own fruit, like berries or apples. Sometimes the fruit is displayed in big baskets or boxes at a stand along the road. Invite campers to share with a partner an experience they may have had at a farm or farm stand where they picked fruit or saw boxes and baskets of fruits. Then continue. Some places let you pick your own fruit—like apples—right off of the trees. Let’s imagine that we’re going to a farm to pick apples! Inspire
• Introduce
• Inspire
• Investigate
• Integrate
Look at the illustrations of baskets of apples on Worksheet 1. Some are labeled red and some are labeled green. What do you notice about the apples? What do you wonder? Give campers a few moments to think to themselves. Then, have them turn and share what they notice and wonder with a partner. Validate when you notice campers demonstrating kindness by acknowledging what their partner says or patiently waiting for their turn to talk.
MULTILINGUAL LEARNERS Ask questions to prepare campers for the investigation, such as: What do you notice about the numbers 104 and 18? How many ones, tens, and hundreds are in each? How can we compose the total?
If campers do not mention adding to find a total, ask these guiding questions to spark their thinking: What are some questions we could ask about the number of apples? Will the total be more or less than 100? Explain.
Learner Supports Multilingual Learners and Range of Learners prompts are integrated throughout each lesson, giving teachers options to provide more instruction or challenge to meet each camper’s individual needs.
Explain that in this activity campers will find the total number of red and green apples. Encourage campers to use the words compose , place value , and regroup in their discussions. Investigate
Let’s explore a math skill together! We can use place value and base-ten blocks to add. Place value is the value of each digit in a number. For example, the place value of 5 in 150 represents 5 tens, or 50. Look at Problem 1 on Worksheet 1. We want to answer the question: How many apples did the campers pick in all? What do the words “in all” mean? How can we find the number “in all?” Listen for synonyms for “in all” as campers discuss. Ask guiding questions to help students arrive at the conclusion that “in all” means total , and a total can be found by adding. Campers, look again at the apples. There are 104 red apples and 18 green apples.
RANGE OF LEARNERS Increase Access: Encourage campers to use two place value mats and model each number separately before putting them together, one place at a time, starting with the ones. Increase Challenge: For additional challenge, have campers make up their own story problem and solve it using base-ten blocks.
70 | MathCamp Leader’s Guide
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