NRICH: Diamond Collector

In the game below, twenty diamonds have been placed on a grid.

You can enter the equations of three straight lines.
Any diamond that lies on one of your lines counts towards your total.

Once you’ve had a go at Level 1, you can click on the purple cog to access the Settings menu and try Levels 2 and 3.

Age 11 to 16 

Try to collect as many diamonds as you can!

Algebra & Pre-Algebra
Middle School, High School

What are you looking for?


NRICH (University of Cambridge)

Website URL

Type of Resource

Online Game

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