Measurement Madness

We enjoyed working collaboratively with a buddy to measure different parts of our body using non-standard units.

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Pania having her body traced by her buddy

We began by deciding as a class to use unifix cubes to measure with. We used unifix cubes as they are able to be clicked together leaving no gaps between units. 

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Lily and her complete outline of her body

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Te Pou fixing cubes together to measure the length of his leg

Next, we had to estimate the length of each body part. We learnt that an estimate is an educated guess. We connected ten unifix cubes together and used this as a benchmark when estimating. 

Then before we could begin measuring we used chalk to trace the outside of our buddies body on the concrete. This way we could measure each body part with more ease. 

After we had finished we then began measuring. We measured the length of our whole body, arm, leg, hand and foot. Some of us counted one to one while others used the strategy of counting in 2s.

Pania commented that the length of her body measured 91 cubes which is heaps! 

Te Pou said he enjoyed connecting all the cubes together to find how long his body parts were.

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Josef measuring the length of his body

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Isabella counting her cubes

We discovered that some of our actual measurements of body parts were the same as our estimate and others different. We found it easier to correctly estimate the length of smaller body parts such as our hands and feet than the length of our body. 

Once we have practised measuring the length of different objects using non-standard units and standard units more we will learn how to find the perimeter of shapes. 

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Pania with her estimations and actual measurements

Curriculum links 

L2 Mathematics - Measurement - Create and use appropriate units and devices to measure length, area, volume and capacity, weight (mass), turn (angle), temperature, and time.

Keywords

measurement, human body, non-standard units

6 Pania with her estimations and actual measurments