teach@homeDaily Lessons & Activities

for K-5 Students

© hand2mind, Inc.

teach@homeDaily Lessons & Activities

for K-5 Students

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The Answer Key for this week’s lessons can be found at:

hand2mind.com For video lessons and additional resources, visit hand2mindathome.com

Printable Answer Keyhand2mind-link.com/M4-AK-W8

Math ActivitiesGrade 4, Week 8

Angles

Day Topic Pages

Day 1 Introduction to Angles 2–3

Day 2 Understanding Angles 4–5

Day 3 Classifying Angles 6–7

Day 4 Measuring Angles 8–9

Day 5 Constructing, Measuring, and Classifying Angles 10–11

Printable Manipulatives

Virtual Manipulatives with Brainingcamp

Physical Manipulatives

Note: Some of this week’s lessons require the use of hands-on tools or manipulatives. You can find them at:

© hand2mind, Inc. hand2mind.comGrade 4 Math, Week 8, Page 2

hand2mind-link.com/M4W8D1

Watch the Day 1 LessonDay 1

Label the rays and vertex on each angle below.

Vertex

Ray 1

© hand2mind, Inc. hand2mind.comGrade 4 Math, Week 8, Page 3

Day 1 (continued)Circle the given angle.

A

G

GZ

T

X

RM

A

B

B

BV

QL

C

C

D

H

JD

DY

SN

E

A

C

I

B

< ABC < BCD

< CDE

< ZVX

< NLM

< HIJ

< DGB

< QRS

© hand2mind, Inc. hand2mind.comGrade 4 Math, Week 8, Page 4

Watch the Day 2 Lessonhand2mind-link.com/M4W8D2Day 2

Write a formula to calculate the angle of each circle segment. Then, write the fraction that represents the circle segment.

Use RainbowTM Angle Circles to help, if available.

Circle Segment Formula Fraction

360° ÷ 2 = 180°1---2

© hand2mind, Inc. hand2mind.comGrade 4 Math, Week 8, Page 5

Day 2 (continued)Draw and label each angle on the circle models shown below.

120° 30°

180° 270°

330° 60°

210° 300°

150° 90°

© hand2mind, Inc. hand2mind.comGrade 4 Math, Week 8, Page 6

Watch the Day 3 Lessonhand2mind-link.com/M4W8D3Day 3

Classify each angle as acute, obtuse, right, or straight. Then, draw a line from each angle to the correct label.

Acute Obtuse Right Straight

© hand2mind, Inc. hand2mind.comGrade 4 Math, Week 8, Page 7

Day 3 (continued)Classify each angle as acute, obtuse, right, or straight. Then, draw a line from each angle to the correct label.

Acute Obtuse Right Straight

60°

91°

154°

136°

90°

28°

89°

2°

120°

180°10°

© hand2mind, Inc. hand2mind.comGrade 4 Math, Week 8, Page 8

Watch the Day 4 Lessonhand2mind-link.com/M4W8D4Day 4

Measure each angle on the protractor. Then, write the angle.

The angle is °.

The angle is °.

The angle is °.

The angle is °.

The angle is °.

The angle is °.

The angle is °.

The angle is °.

© hand2mind, Inc. hand2mind.comGrade 4 Math, Week 8, Page 9

Day 4 (continued)Draw each angle on the protractor.

80°

20°

130°

90°

110°

135°

70°

160°

© hand2mind, Inc. hand2mind.comGrade 4 Math, Week 8, Page 10

Draw an acute angle. Draw an obtuse angle.

Draw a straight angle. Draw a right angle.

Draw an acute angle that is greater than 45°.

Draw an obtuse angle that is greater than 140°.

Draw an acute angle that is less than 45°.

Draw an obtuse angle that is less than 140°.

hand2mind-link.com/M4W8D5

Watch the Day 5 LessonDay 5

Draw each angle based on the prompt.

© hand2mind, Inc. hand2mind.comGrade 4 Math, Week 8, Page 11

Day 5 (continued)Solve each problem. Show your work.

1. Emma is programming a dancing robot for her science fair competition. Can you help Emma program her robot? She wants her robot to spin in a complete circle using 6 equal turns. What angle should the robot turn for each circle segment? Draw a model. Then, classify the angle. The robot should turn _____ degrees each turn. This is a(n) ________ angle.

2. Janie is designing a ceiling fan for her room. Her ceiling fan will have 3 equally spaced-out blades. What should the angle be between each of the blades? Draw a model of the ceiling fan. Then, classify each angle. The angle between each blade should be _____ degrees. This is a(n) ___________ angle.