Contents
Section A: Points, Lines, Segments, Rays, and Angles
Lesson 1: How Would You Describe These Figures?
Warm-up: Notice and Wonder: String Art
1.1: Do You See What I See?
1.2: Lines and Line Segments
Lesson 2: Points, Lines, Rays, and Segments
Warm-up: Number Talk: Finding Differences
2.1: Card Sort: Who Am I?
2.2: Make Some Shapes
Lesson 3: Two or More Lines
Warm-up: How Many Do You See: A Curious Figure
3.1: Four Lines
3.2: To Cross or Not to Cross
Lesson 4: Points and Lines All Around
Warm-up: Which One Doesn’t Belong: Four-sided Shapes
4.1: Spot Lines and Line Segments
4.2: Draw and Design with Lines
Lesson 5: What is an Angle?
Warm-up: Notice and Wonder: A Wall of Clocks
5.1: Tricky Figures
5.2: Angles or Not Angles?
5.3: Discover Angles
Section A Summary
Section A Practice Problems
Section B: The Size of Angles
Lesson 6: Compare and Describe Angles
Warm-up: Which One Doesn’t Belong: Angles
6.1: Card Sort: Angles
6.2: Order Angles
Lesson 7: The Size of Angles on a Clock
Warm-up: Notice and Wonder: Two Sets of Angles
7.1: Draw Angles Andre’s Way
7.2: Compare Angles on the Clock
Lesson 8: The Size of Angles in Degrees
Warm-up: What Do You Know about 360?
8.1: A Full Turn
8.2: Make a Measuring Tool
Lesson 9: Use a Protractor to Measure Angles
Warm-up: True or False: There's Something about 45
9.1: How Large is a 1^\circ Angle?
9.2: Use a Protractor
Lesson 10: Angle Measurement and Perpendicular Lines
Warm-up: Number Talk: Quotients
10.1: Angles Here, There, Everywhere
10.2: A Folding Challenge
Lesson 11: Use a Protractor to Draw Angles
Warm-up: Estimation Exploration: Long Hand and Short Hand
11.1: Draw These Angles
11.2: Angles Made to Order
Section B Summary
Section B Practice Problems
Section C: Angle Analysis
Lesson 12: Types of Angles
Warm-up: Number Talk: Fractions of 120 and 360
12.1: Sorting Angles
12.2: What is It, Really?
12.3: Small Angles, Large Angles
Lesson 13: Find Angle Measurements
Warm-up: Notice and Wonder: Corner Pieces
13.1: How Big Are These Angles?
13.2: Angles in a Kite
Lesson 14: Reasoning about Angles (Part 1)
Warm-up: Which One Doesn’t Belong: Time After Time
14.1: Draw a Clock
14.2: Tick Tock
Lesson 15: Reasoning About Angles (Part 2)
Warm-up: How Many Do You See: Obtuse Angles
15.1: Shaded and Unshaded Angles
15.2: Info Gap: A Whole Bunch of Angles
Section C Summary
Lesson 16: Guess the Figure
Warm-up: Notice and Wonder: Two Figures
16.1: Make a Change
16.2: Guess My Figure
Section C Practice Problems
Glossary
Attributions
Image Attributions
Notes
Notes
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