Summary
Math Antics explains what an angle is and names right, acute and obtuse angles. A clear, animated 8-minute lesson you can drop straight into a grade 4 math block -- pause-friendly, with worked examples on screen.
Viewer safety
All ages
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Teaching resources
Discussion questions
Discussion
A few questions to talk through after watching “Angle Basics.”
- What two parts form an angle?
- How big is a right angle?
- How can you tell an acute angle from an obtuse one?
Quick work-a-long
Vocabulary: angle, vertex, ray, right, acute, obtuse.
Try it: Draw a right, an acute and an obtuse angle and label each.