Multiplying both sides of the equation Whiteboard exercise Play

Observational data Student activity Play

Operations on exponents – more difficult problem Whiteboard exercise Play

Operations on exponents – more difficult problem Whiteboard exercise Play

Ordering decimals – more difficult problem Whiteboard exercise Play

Price of a computer – more difficult problem Student activity Play

Price of a computer – more difficult problem Whiteboard exercise Play

Problem assumptions Class activity Play

Problem assumptions Whiteboard presentation Play

Problem solving Class activity Play

Problem solving Whiteboard presentation Play

Problem solving using a spreadsheet Student activity Play

Problem specification Whiteboard presentation Play

Problem specification Class activity Play

Problem with matches Whiteboard exercise Play

Problem with six Whiteboard exercise Play

Quadratic equations that have no solution Whiteboard exercise Play

Quadratic equations that have solution Whiteboard exercise Play

Samuel Pepys' problem Animation Play

Short-sightedness Animation Play

Sight defects Student activity Play

Similarity – solving problems Class activity Play

Similarity – solving problems Whiteboard presentation Play

Simplifying and solving exponential inequalities Whiteboard exercise Play

Small steps Whiteboard presentation Play