Description/Aim

Students become familiar with Dynamic Geometry and explore some of the rules that they may have come across. The activity asks students to create diagrams that show angles in a triangle, angles on a straight line and angles around a point. They are asked to measure the angles and the sum of the angles and then investigate what happens when they change the angles!
Please find the digital worksheet for students and a demo dynamic geometry file for teachers

Time 1hr + time to familiarise with the software. Age 10+

Why we like this activity ….

Often a first experience of dynamic geometry, the activity gives students the chance to explore on a
level they could not before at a level of accuracy that cant be achieved with pen and paper! Discovery
and testing that helps to consolidate ideas

How this activity be used ….

I like students to do this on their own and keep the worksheet digital, including screen shots as they go.


What to expect when using this activity – from our experience

It is a really good idea to prepare for this with an activity designed to help students become familiar
with the software. see suggestions on 'Angles in Shapes'

Extra Notes