Facts and assumptions – algebraic expressions Whiteboard exercise Play

Facts and assumptions – algebraic inequalities Whiteboard exercise Play

Facts and assumptions – prime numbers Whiteboard exercise Play

Facts and assumptions – the sum of the numbers Whiteboard exercise Play

Famous problems Student activity Play

Flowers problem Animation Play

Forest density and bird density problem – conclusions Animation Play

Frequency density Student activity Play

Geometric problem Whiteboard exercise Play

How many are there? A more difficult problem Student activity Play

How many different divisors does a natural number have? A more difficult problem Student activity Play

How many were there? A more difficult problem Student activity Play

How many? A more difficult problem Student activity Play

Large nematode – another big problem Student activity Play

Linear equation and geometric problem Whiteboard exercise Play

Long-sightedness Animation Play

Minimum area problem Student activity Play

Minimum area problem Simulation Play

Misuse of drugs Student activity Play

More complex problems involving direct proportionality Student activity Play

More complex problems involving direct proportionality Whiteboard exercise Play

More complicated problem Animation Play

More complicated problems Whiteboard exercise Play

More complicated problems Student activity Play

More difficult problem involving proportion Student activity Play