Positive and negative electricity Student activity Play

Positive and negative momentum Animation Play

Positive or negative gradient? Simulation Play

Powers with integer negative exponents Animation Play

Powers, roots and indices Class activity Play

Powers, roots and indices Whiteboard presentation Play

Practical applications of voltaic cells Student activity Play

Problems with storing electrical charge Student activity Play

Problems with storing electrical charge Whiteboard exercise Play

Protons and electrons Student activity Play

Protons and electrons Whiteboard exercise Play

Radioactivity Student activity Play

Raising 10 to a negative integer Whiteboard exercise Play

Raising 10 to a positive integer Whiteboard exercise Play

Reactions between halogens and metals Student activity Play

Reactions occurring at the electrodes Student activity Play

Reduction formulas for the cosine Animation Play

Reduction formulas for the sine 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

Silver halides in photography Student activity Play