Module 6 Lesson 14. Objective Use scissors to partition a rectangle into same-size squares, and compose arrays with the squares.

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Presentation transcript:

Module 6 Lesson 14

Objective Use scissors to partition a rectangle into same-size squares, and compose arrays with the squares.

Sprint: Subtraction from Teens Sprint A On your mark, get set, THINK! Sprint B On your mark, get set, THINK!

Coin Drop Name my coin. How much is it worth? Listen carefully as I drop coins in my can. Count along in your minds.

More and Less Let’s count by tens. How many dimes are shown? What is the value of 6 dimes? What is 5 cents more? Give the number sentence. What is 10 cents less? Give the number sentence.

Concept Development Today we’re going to use the Problem Set for our lesson! We’ll use the sentence frames to record our answers and to speak in complete sentences. Cut Rectangle A into rows and complete Problem 1. Share your responses and thinking with your partner. Cut Rectangle B into columns and complete Problem 2. Share again. Put both rectangles back together again. Move the columns of Rectangle B so they are sitting directly on top of the rows of Rectangle A with no gaps or overlaps. Talk to your partner about what you notice.

Concept Development You’ve recognized that we can decompose the same rectangle into rows, columns or unit squares. Take both your rows of 4 and cut them to show 4 twos instead of 2 fours. Put together your twos to form one long rectangle that has 8 columns of 2. Imagine we were going to put 2 rows on top to make the exact same rectangle. Talk to your partner. Explain what those rectangles would be.

Concept Development We can decompose this rectangle into 2 rows of 8 or 8 columns of 2. Cut out all your squares from Rectangles A and B. How many squares do you have now? Use your 16 squares to answer Problem 3. To answer Problem 4, cut out your squares from Rectangles A, B, and C.