# 7 feet (MathXplosion follow up)

A thinking mathematically targeted teaching opportunity focussed on using an informal unit of measurement to investigate length

Watch the episode of MathXplosion – Most people are seven feet tall on the ABC Education website.

## Syllabus

Syllabus outcomes and content descriptors from Mathematics K–10 Syllabus © NSW Education Standards Authority (NESA) for and on behalf of the Crown in right of the State of New South Wales, 2023

• MAO-WM-01
• MAE-GM-02
• MAE-GM-03

• MAO-WM-01
• MA1-GM-02
• MA1-GM-03

## Collect resources

You will need:

• pencils or markers

## Watch

Watch the 7 feet (MathXplosion follow up) video (0:59).

Trace and cut around your foot to help see if you are seven 'feet' tall.

### Transcript of 7 feet (Mathxplosion follow up) video

[Screen reads: Trace around your foot. Screen shows white paper on the floor, with a foot on the piece of paper. They model the foot being traced around with a marker.]

[Screen reads: Now, you have your footprint! Screen shows the white paper with outlined footprint displayed.]

[Screen reads: Next, carefully cut your foot out… The screen shows the instructor cutting out the footprint outline using scissors.]

[Screen reads: Are you 7 feet tall? Can you find some things that are more than 7 feet tall? Can you find some things less than 7 feet tall? Over to you, mathematicians!]

### Speaker:

Alright mathematicians, so are you 7 feet tall?

Then can you find some things that are more than your 7 feet tall?

And can you find some things that are less than your 7 feet tall?

Over to you to investigate, mathematicians.

[End of transcript]

## Instructions

• Work out whether you are 7 feet tall.
• Can you find some things that are more than your 7 feet tall? Write and draw your findings in your workbook.
• Can you find somethings less than your 7 feet tall? Write and draw your findings in your workbook.