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### Number and algebra

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### Working mathematically

### For younger learners

### Advanced mathematics

# Bio-numbers

### Big and Small Numbers in the Living World

### Big and Small Numbers in Biology

### Time to Evolve

### Biology Measurement Challenge

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What do nature's numbers look like? Are they big or small? Can we calculate them precisely, or do we have to work through estimation and approximation? These problems provide a range of contexts to practise these vital skills.

Age 11 to 16

Challenge Level

Work with numbers big and small to estimate and calculate various quantities in biological contexts.

Age 14 to 16

Challenge Level

Work with numbers big and small to estimate and calulate various quantities in biological contexts.

Age 14 to 16

Challenge Level

How many generations would link an evolutionist to a very distant
ancestor?

Age 14 to 16

Challenge Level

Analyse these beautiful biological images and attempt to rank them in size order.