Summary
Math Antics classifies triangles by their sides and their angles. A clear, animated 8-minute lesson you can drop straight into a grades 4-5 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 “Classifying Triangles.”
- How are triangles grouped by their sides?
- How are triangles grouped by their angles?
- Can a triangle be both right and isosceles?
Quick work-a-long
Vocabulary: triangle, equilateral, isosceles, scalene, right.
Try it: Draw an equilateral, an isosceles and a scalene triangle.