
Triangle Lie Detector
Here is a blank picture if you’d rather create your own prompt. Number talks with @MathBeforeBed 🙂 pic.twitter.com/y9dKYXS9E6 — Grade

Here is a blank picture if you’d rather create your own prompt. Number talks with @MathBeforeBed 🙂 pic.twitter.com/y9dKYXS9E6 — Grade

Count the number of shapes. Count the number of shapes by colour. Count the number of green triangles that could

This is how one student counted the squares @MathBeforeBed @catholic_hill pic.twitter.com/fZZHmJAqSg — Kirsty Chamberland (@K_Chamberland) December 7, 2017

Thinking from young ones: Math Talk today- Counting poppies and seeing patterns @Breslau_Rm8 Thanks @MathBeforeBed for the picture pic.twitter.com/8shjV6K5j0 —




\ \ You can also sum the little squares by adding 1+3+5+7+9+11+13 ((yellow)+(blue)+(green)+(orange)+(red)+(dark blue)+(burgundy)). Since visually this forms a square

\ \ The purple squares can be represented by 1+2+3+4+5+6 and can be visually seen by finding half the area

\ \ Do you see any patterns? How many tops? How many jars?

\ \ You can read more about trying to incorporate math into your puzzle making.\ \


\ \ Estimate – How many wooded logs are BEHIND the blue rectangle? How did you estimate?

\ \ Encourage counting various types. How many cooked cookies? How many uncooked? How many rows? Columns? As always discuss




\ \ For a video version of this prompt check out the twitter feed here.

\ \ How did you create the red squares? Draw a diagram to show your thinking.

\ \ Extensions:How many more yellow squares do you need to add to the big cube to make the big

\ \ Extensions: What fraction is blue/purple? How many more blue to fill the screen? Draw your own partially-filled grid.


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