Leonardo da Vinci, the famous Italian polymath who painted the Mona Lisa, had a sophisticated geometric understanding way ...

Working with Sketch 3 Project Sketch 3 on the screen and ask the students to explore which coloured triangles could fit into the given triangle outlines. For this sketch, all the outlines look like ...

2. Have the students imagine they have to tell someone on the phone how to draw a triangle. Ask "How would you do it?" Follow the children’s descriptions. They will usually say something about making ...