Mass and weight

A group of animals has made a seesaw in the woods. How can you make the seesaw balance?

Explore all aspects of measurement in this activity.

These watermelons have been entered into a competition. Use the information to work out the number of points each one was awarded.

Can you place these quantities in order from smallest to largest?

This activity challenges you to decide on the 'best' number to use in each statement. You may need to do some estimating, some calculating and some research.

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