Complete this interactive activity to understand how to compare lengths and heights. Then put your knowledge to the test. When you are comparing lengths, you are describing how long or short an object ...

Give children plenty of opportunities to measure and compare quantities, and develop the vocabulary to describe what they are doing, with more activity ideas in our series by Sheila Ebbutt and Carole ...

The mass of an object is how heavy it is. The amount of matter in an object is its mass. You can use the words 'heavy' and 'light' to describe the mass of an object. You can use the words 'heavier' ...