Mass and capacity - Compare volume - Presentation

In today's lesson on mass and capacity, students will revisit the concept of comparing volumes using comparative terms such as 'more than', 'less than', and 'equal to'. They will explore the definition of 'volume' and discuss scenarios where knowing the volume of an object might be necessary. The lesson distinguishes between 'capacity', which is the maximum amount a container can hold, and 'volume', the actual amount of liquid present in the container. For example, a bottle may have a capacity of 110 millilitres, but if it only contains 80 millilitres of liquid, then its volume is 80 millilitres. Students will be encouraged to provide three examples to demonstrate their understanding of the concept.

Activities in the lesson include exercises where students must complete sentences by determining whether one container has 'less', 'more', or an 'equal' amount of liquid compared to another. These exercises are designed to reinforce their understanding of volume comparison in a practical context. Additionally, students will engage in an activity where they must decide which of two cups has the most or least juice after being poured from two full bottles, requiring them to explain their reasoning. The lesson also includes independent work where students use the terms 'more', 'less', or 'equal' to compare the volumes of different containers and order them from smallest to largest. Discussions will prompt students to consider whether the tallest container always has the greatest capacity and to explore the relationship between the size of containers and the volume of liquid they can hold.