### Teaching and Group Activities for Understanding

**Day 1 Teaching**

Show two containers with different capacities and of different proportions. Fill the larger with coloured water. Pour into the smaller. Then vice versa. Which has larger capacity? Rehearse vocabulary ‘full’, ‘half full’, ‘nearly full’, ’empty’, ‘nearly empty’.**Group Activities**

-- Match labels to pictures of containers.

-- Compare and order containers by capacity.

**Day 2 Teaching**

Show children a container and a plastic cup. Ask children how many cups will fill the container. Less than 5? More than 5? More than 10? Take suggestions, then measure. Place four containers in order from the least capacity to the greatest capacity.**Group Activities**

Use the ‘Fill the Bucket’ in-depth problem-solving investigation below as today’s group activity.

Or, use these activities:

-- Order containers by capacity.

-- Estimate and measure container capacity.

**Day 3 Teaching**

Show children 4 containers of different proportions, e.g. a wide shallow bowl, a tall thin vase, etc. Ask children which holds more/less, most/least. Discuss. Suggest counting how many cups of sand will fill each container to check the order. Measure and order them.**Group Activities**

-- Sort containers into 2 groups by capacity.

-- Estimate how many egg cups of sand a range of containers holds.