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Students learn how to derive and apply the Cosine rule to find missing lengths in triangles. As learning progre...

Students learn how to solve trigonometrical equations with exact solutions using special triangles. As learnin...

Students learn how to derive and apply Pythagoras' Theorem to find the hypotenuse of right-angled triangles. A...

Students learn how to calculate a shorter side of a right-angled triangle using Pythagoras' Theorem. As learni...

Students discover Pythagoras’ Theorem through construction of Pythagorean triples. As learning progresses stude...

Students learn how to derive and apply the Sine rule to find missing angle in triangular shapes. As learning pr...

Students learn how to apply Sin, Cos and Tan to find missing angles in right-angled triangles. As learning prog...

Students learn how to derive and apply the area formulae for non-right-angles. As learning progresses they are ...

Students learn how to plot and read from trigonometrical graphs between 0 to 360°. As learning progresses they ...

Students discover the three trigonometric ratios Sin, Cos and Tan through constructions. As learning progresses...

Students learn how to calculate unknown lengths in right-angled triangles using Sin, Cos and Tan. As learning p...

Students learn how to calculate unknown lengths and angles in right-angled triangles using Sin, Cos and Tan. As...

Students learn how to calculate the volume of a cone using the base area and perpendicular height. As learning ...

Students learn how to calculate the curved surface area of a cone and total surface area of a cone by considerin...

Students learn how to calculate the surface area and volume of a cylinder. As learning progresses students are ...

Students learn how to calculate the volume and surface area of spheres using the formulae. As learning progress...

March 10, 2019

When calculating the volume of a pyramid we can substitute the values of the length, width and perpendicular height into the formula V = 1/3 lwh. In my experience this is often provided for the students with little explanation as to why a volume of a pyramid is exactly one third the volume of a […]March 4, 2019

When teaching solving 3D problems using trigonometry we begin the lesson with a recap of Pythagoras’ Theorem and the three trigonometric ratios. We do this by matching the ratio and equations to the respective right-angled triangle. Students are encouraged to work in pairs and to show the diagrams as part of the working out on […]January 29, 2019

When I teach rounding to a significant figure, I ask the class to discuss in pairs or small groups a definition for the word significant. It is a word that all the students have heard before but not all are able to define. After 2 or 3 minutes of conversation I ask the students to […]