Contents

1. Section A: Reason with Shapes
2. Lesson 1: What Attributes Do You See?
   1. Warm-up: Which One Doesn’t Belong: Who’s in the Group?
   2. 1.1: Card Sort: Shapes
3. Lesson 2: Attributes of Triangles and Quadrilaterals
   1. Warm-up: True or False: Multiples of Ten
   2. 2.1: Card Sort: Triangles
   3. 2.2: Card Sort: Quadrilaterals
4. Lesson 3: Attributes that Define Shapes
   1. Warm-up: Number Talk: Multiply Multiples of Ten
   2. 3.1: Learn How to Play Mystery Quadrilateral
   3. 3.2: Play Mystery Quadrilateral
5. Lesson 4: Attributes of Rectangles, Rhombuses, and Squares
   1. Warm-up: Which One Doesn’t Belong: More Attributes
   2. 4.1: What Makes These Shapes So?
6. Lesson 5: Attributes of Other Quadrilaterals
   1. Warm-up: Number Talk: Divide by 7
   2. 5.1: All the Ways
   3. 5.2: Draw One That’s Not . . .
   4. Section A Summary
   5. Section A Practice Problems
7. Section B: What is Perimeter?
8. Lesson 6: Distance Around Shapes
   1. Warm-up: Notice and Wonder: Paper Clips & Shapes
   2. 6.1: What Does It Take to Build the Shapes?
   3. 6.2: Distance Around
9. Lesson 7: Same Perimeter, Different Shapes
   1. Warm-up: True or False: Sums of Four Numbers
   2. 7.1: All Kinds of Shapes
   3. 7.2: Draw Your Own
10. Lesson 8: Find the Perimeter
    1. Warm-up: Number Talk: Decreasing Dividend
    2. 8.1: Ways to Find Perimeter
    3. 8.2: Something is Missing
11. Lesson 9: Perimeter Problems
    1. Warm-up: Estimation Exploration: Statue of Liberty
    2. 9.1: Missing Measurements
    3. 9.2: Can I Use Perimeter?
    4. Section B Summary
    5. Section B Practice Problems
12. Section C: Expanding on Perimeter
13. Lesson 10: Problem Solving With Perimeter and Area
    1. Warm-up: True or False: Divide in Parts
    2. 10.1: Rope Off the Garden
    3. 10.2: Info Gap: A Garden and a Playground
14. Lesson 11: Rectangles with the Same Perimeter
    1. Warm-up: Number Talk: Multiply to Divide
    2. 11.1: Perimeter of 16 Units
    3. 11.2: Same Perimeter, Different Area
15. Lesson 12: Rectangles with the Same Area
    1. Warm-up: Number Talk: Divide in Parts
    2. 12.1: Area of 24
    3. 12.2: Same Area, Different Perimeter
    4. Section C Summary
    5. Section C Practice Problems
16. Section D: Design with Perimeter and Area
17. Lesson 13: Shapes and Play
    1. Warm-up: Notice and Wonder: A Park
    2. 13.1: Design a Park
    3. 13.2: Park Problems
18. Lesson 14: Wax Prints
    1. Warm-up: Notice and Wonder: Textiles
    2. 14.1: Create a Wax Print Pattern
    3. 14.2: Info Gap: The Bundle
19. Lesson 15: Design Your Own Robot
    1. Warm-up: What Do You Know About Area and Perimeter?
    2. 15.1: Create Your Own Robot
    3. Section D Summary
    4. Section D Practice Problems
20. Glossary
21. Attributions
    1. Image Attributions
22. Notes
23. Notes