A straightforward lesson explains the meaning of complementary and supplementary angles. The instructor uses both an algebraic representation and a numeric example to describe each angle pair.

Concepts

complementary angles, supplementary angles, writing expressions

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Additional Tags

math

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Instructional Ideas

• Post the video for absent pupils or those needing extra instruction
• Have learners complete a graphic organizer, such as a Frayer model, for new vocabulary as they watch the lesson

Classroom Considerations

• Requires Internet access if assigning for independent viewing

• This video is hosted on YouTube

Pros

• Uses diagrams, examples, and explanations to teach the concept
• Instruction is clear and easy to follow

Cons

• None

Common Core

SL.7.2 SL.8.2 SL.9-10.2 7.G.B.5 RST.6-8.7 RST.9-10.7