Pythagoras’ theorem two ways

In this lesson, students use Pythagoras’ theorem to calculate unknown side lengths in right-angled triangles after undertaking a step-by-step method of working through visual and algebraic proofs simultaneously. This will help students to develop deeper connections between algebra and measurement in this context.

Resource details
Year level: Year 9
Purpose: Teaching resource
Strand: Measurement
Topic: Pythagoras and trigonometry Using units of measurement Computational thinking
Audience: Teachers
Format: Webpage
Australian Curriculum code: AC9M9M03
Numeracy progression: Understanding geometric properties (P7) Understanding units of measurement (P10) Proportional thinking (P7)
Publisher: Commonwealth of Australia
Keywords: problem solving proof congruent similar algorithm
Other terms: Maths Hub lesson plan