Math in Focus Chapter 9: Angles
Big Idea: Angles can be seen and measured when two rays or sides of a shape meet.
Key Visuals/Activities:
Lesson Preview:
Big Idea: Angles can be seen and measured when two rays or sides of a shape meet.
- Students estimate and measure angles to 180°.
- Students use a protractor to measure angles.
- Students understand that turn is the same as a right angle, turn is the same as two right angles and so on.
Key Visuals/Activities:
- Estimate and measure angles with a protractor.
- Use a protractor to draw right, acute, and obtuse angles.
- Relate and full turns to the number of right angles (90°).
- Understand what an angle measure of 1° represents.
- Find unknown angle measures using addition or subtraction.
- Solve real-world problems by finding unknown angle measures.
Lesson Preview:
- 9.1 Understanding and Measuring Angles
- 9.2 Drawing Angles to 180°
- 9.3 Turns and Angle Measures
Learning Videos: Game Suggestions: Learning Links:
Ch 9 Background Videos for Parents
Chapter 9 Practice
Workbook Pages
Reteach
Extra Practice
Enrichment
Ch 9 Background Videos for Parents
Chapter 9 Practice
Workbook Pages
Reteach
Extra Practice
Enrichment