Proving identity for the tangent Whiteboard exercise Play

Quadrilaterals with incircle Animation Play

Quartile coefficient of skewness Student activity Play

Quartiles and interquartile range Student activity Play

Range Student activity Play

Range of trigonometric functions Student activity Play

Range of trigonometric functions Whiteboard exercise Play

Reach the star Game Play

Reciprocals of basic trigonometric ratios Student activity Play

Recover the function Student activity Play

Recover the function using a gradient and a tangent Whiteboard exercise Play

Recover the function using a tangent Whiteboard exercise Play

Reduction formulas due to periodicity Whiteboard exercise Play

Reduction formulas due to periodicity Student activity Play

Reduction formulas for the tangent Animation Play

Rewriting the sine using double-angle formulas for the tangent Animation Play

Roots of roots – finding true equations Whiteboard exercise Play

Rotating a half-turn – symmetry with respect to a point Student activity Play

Secant and tangent of a function Animation Play

Second-order derivative at a local extremum Student activity Play

Second-order derivative at a local maximum Animation Play

Second-order derivative at a local minimum Animation Play

Simple trigonometric equations Whiteboard presentation Play

Simple trigonometric equations Class activity Play

Simplifying algebraic expressions Student activity Play