Research-based guidance and classroom activities for teachers of mathematics

Angle A

This task is available on the NRICH website.

Angle measurement can be difficult for some learners, perhaps due in some ways to the somewhat separate ‘static’ and ‘dynamic’ notions of angle they can experience in school mathematics.

This task focuses on learners exploring angles in a triangle, including how the size of its angles impacts on the relative shape of triangle.

Go to Angle A on the NRICH website >>