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Year 9&10 Trigonometry: Ratios

Key concepts: Use the sine, cosine and tangent ratios to solve to solve problems involving right-angled triangles. While the equations can be solved by other methods, NumSolve is encouraged here and an extension is to save the formulae in an …

Year 9&10 Trigonometry: Geometry app

Key concepts: Draw scale diagrams to solve problems involving right-angled triangles. This technique is useful whenever a scale diagram can be used to solve the problem. Apps: Geometry Activity Solution

Slope or Gradient?

Unpacking linear functions and coordinate geometry activities for Year 9&10.   Key concepts for this activity centre on: Dynamically draw a triangle to calculate slope of a line segment. Introduce geometry link in an eActivity. Extend to length of the line …

Midpoint

Unpacking linear functions and coordinate geometry activities for Year 9&10.   Key concepts for this activity centre on: Visualise the midpoint of a line segment and deduce a formula for its coordinates Apps: Geometry Activity Solution YouTube video demo Particularly useful …