### Planning and Activities

**Day 1** **Teaching**

Show a metre stick. Use this to estimate the heights of outlines of people. Measure one of the outlines and model how we record this, e.g. 134cm is 1 metre and 34cm (Y3) or 1.34m (Y4).

**Group Activities: T with Y4**

Y3 -- Measuring heights using cm. Convert to m and cm.

Y4 -- Convert height measurements from cm to m and cm, and distances from m to km.**Day 2 Teaching**

Measure our feet in cm. Discuss the need for a smaller unit. Demonstrate how to use mm for accuracy. Convert mm to cm and mm (Y3) and to cm only (Y4).**Whole Class Activity: T to Circulate**

-- Are both our feet the same size? Measuring feet in mm and comparing. Convert to cm and mm (Y3) or cm only (Y4).**Day 3 Teaching**

Today children will carry out their own measuring investigations (length). They can choose what their investigation will be about but it must be simple and answer a question. Give some examples and model using a bar chart to display findings.**Whole Class Activity: T to Circulate**

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

Or, use the investigation below:

-- Measuring investigation and data presentation.