Dividing by a fraction Whiteboard exercise Play

Dividing using the written method Animation Play

Domain and periodicity of trigonometric functions Student activity Play

Double-angle formula for the tangent Whiteboard exercise Play

Double-angle formula for the tangent Student activity Play

Double-angle formulas Class activity Play

Double-angle formulas Whiteboard presentation Play

Drawing the tangent Animation Play

Electrolysis as a method for metal extraction Student activity Play

Electrolysis as a method for metal extraction Whiteboard exercise Play

Energy cycle method Animation Play

Enzymatic method for determining glucose concentration Slideshow Play

Enzymatic method for determining glucose concentration in the blood Student activity Play

Enzymatic method for determining glucose concentration in urine Simulation Play

Enzymatic method for determining glucose concentration in urine Student activity Play

Equal segments Animation Play

Equality of tangent and cotangent Whiteboard exercise Play

Equations involving the tangent function Student activity Play

Equations involving the tangent function Whiteboard exercise Play

Equations with tan(ax) Whiteboard exercise Play

Equations with  tan(ax) Student activity Play

Estimating the gradient Student activity Play

Estimating the gradient of a curve Whiteboard exercise Play

Exact values of trigonometric ratios Animation Play

Exact values of trigonometric ratios for selected angles Animation Play