### Teaching and Group Activities for Understanding

**Day 1 Teaching**

Look at a metre stick and ascertain how many centimetres it is. Find 50cm, 25cm, 75cm, etc. Measure different objects in centimetres.

**Group Activities**Use the ‘Hands and Fingers’ in-depth problem-solving investigation below as today’s group activity.

Or, use these activities:

-- Measuring heights using cm. Convert to m and cm.

**Day 2 Teaching**

Choose suitable units to measure different objects. Measure our feet in cm. Discuss the need for a smaller unit. Demonstrate how to use mm for accuracy.

**Group Activities**

-- Are both our feet the same size? Measuring feet in mm and comparing. Convert to cm and mm.