1km

A

.

.

B

.

.

km

Score will appear here.

Discuss with your friends and teacher the strategies you could use when estimating a distance.

**Extension activities:**

Copy and paste your table of results into a spreadsheet then investigate the following:

- What is the average time it took you to make your estimate?
- Is your estimate more likely to be higher or lower than the actual distance?
- Is there a correlation between the distance and your percentage error?
- Can you work out the formula the computer uses to calculate your score?
- Can you get better at estimating with practice?

Detailed image of the lunar surface, east of Paracelsus crater. Photo taken on the Apollo 15 mission, July 1971. (Photo courtesy of NASA/ASU)

More Estimating: Estimating Sheep | Estimation Golf | Estimating Percentages