Rates of change Class activity Play

Rates of change Whiteboard presentation Play

Reach the star Game Play

Reactions between halogens and metals Student activity Play

Reactions occurring at the electrodes Student activity Play

Reading graphs of linear functions Class activity Play

Reading graphs of linear functions Whiteboard presentation Play

Recover the function Student activity Play

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

Reduction formulas for the cosine Animation Play

Reduction formulas for the sine Animation Play

Road signs Animation Play

Roots of roots – finding true equations Whiteboard exercise Play

Roots of roots – more examples of true or false equations Whiteboard exercise Play

Rounding decimals Whiteboard exercise Play

Rounding decimals to 0.1 or to 0.01 Animation Play

Rounding decimals to 10–1 or to 10–2 Student activity Play

Rounding large numbers Whiteboard exercise 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 minimum Animation Play

Silver halides in photography Student activity Play

Simplified formula for Pearson's coefficient Student activity Play

Skewness Whiteboard exercise Play

Slope of a line Student activity Play