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

Individual diversity Student activity Play

Inherited variation: recombination and mutation Student activity Play

Junctional diversity Illustration 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 Whiteboard exercise Play

More complex problems involving direct proportionality Student activity Play

More complicated problem Animation Play

More complicated problems Whiteboard exercise Play

More complicated problems Student activity Play

More difficult problem involving proportion Whiteboard exercise Play

More difficult problem involving proportion Student activity 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

Phenotype – the effect of gene activity and environmental factors Student activity Play