This Prerequisite check ensures that children can compare objects by size, before introducing the concept of weight. Remind children that when comparing two objects you should use the words larger or smaller (comparatives) and when ordering and comparing three or more objects you use largest or smallest (superlatives).
The picture shows children a familiar activity. Seeing children on the seesaw will prompt discussion about their own experiences on seesaws. Encourage children to think about what happens when one person gets on and when someone gets on the other side.
Explore the balance scales, have a range of objects to put in the balance scales.
What do you notice? What do you think that means?