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### Number and algebra

### Geometry and measure

### Probability and statistics

### Working mathematically

### For younger learners

### Advanced mathematics

# Estimation

### Place Your Orders

### Big and Small Numbers in the Living World

### Bigger or Smaller?

### Big and Small Numbers in the Physical World

### Time to Evolve

### Counting Dolphins

### Choose Your Units

### Does This Sound about Right?

### Robot Camera

### Big and Small Numbers in Physics

### Big and Small Numbers in Biology

### Carbon Footprints

### Approximately Certain

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This collection of STEM resources is based around the topic estimation. Resources are listed in order of stage.

Age 11 to 14

Challenge Level

Can you rank these sets of quantities in order, from smallest to largest? Can you provide convincing evidence for your rankings?

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

When you change the units, do the numbers get bigger or smaller?

Age 14 to 16

Challenge Level

Work with numbers big and small to estimate and calculate various quantities in physical 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

How would you go about estimating populations of dolphins?

Age 14 to 16

Challenge Level

Which units would you choose best to fit these situations?

Age 14 to 16

Challenge Level

Examine these estimates. Do they sound about right?

Age 14 to 16

Challenge Level

Could nanotechnology be used to see if an artery is blocked? Or is this just science fiction?

Age 14 to 16

Challenge Level

Work out the numerical values for these physical quantities.

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

Is it really greener to go on the bus, or to buy local?

Age 14 to 18

Challenge Level

Estimate these curious quantities sufficiently accurately that you can rank them in order of size