Weight and volume - Compare capacity - Presentation

In the educational presentation on comparing capacity, students are introduced to the concept of volume and how to measure the capacity of different containers. The lesson emphasizes the importance of using consistent units of measure, such as cups, to compare the amount each container can hold. Students are encouraged to use comparative language such as 'more than', 'less than', and 'equal to' to describe the relationships between the capacities. The presentation poses questions to provoke discussion on why it is crucial to use the same unit of measure when comparing capacities and invites students to think about the methods used to determine which container has the largest or smallest capacity.

The hands-on activities guide students through practical exercises where they fill containers with a liquid or rice using a small cup as the unit of measure. They are then tasked with ordering the containers from largest to smallest capacity, further reinforcing their understanding of volume. Subsequent activities involve comparing the capacity of bottles, using symbols to represent greater than, less than, or equal to, and using the terms 'more' or 'less' to compare two containers directly. The lesson also includes reasoning exercises where students must justify their answers, such as explaining why a bottle might hold more than two glasses of juice. Independent work challenges students to verify the truth of statements regarding capacity and to circle which of two items—a glass or a jug—holds more, fostering critical thinking and practical application of the concepts taught.