In this session, let’s explore rotational symmetry and how it is different from line symmetry. If you can rotate (or turn) a figure around a center point by fewer than 360° and the figure appears unchanged, then the figure has rotation symmetry. The point around which you rotate is called the center of rotation,…

Symmetry is one of the most important ideas in mathematics. In this session, we will explore geometric versions of symmetry by creating designs and examining their properties. If we can reflect (or flip) a figure over a line and the figure appears unchanged, then the figure has reflection symmetry or Line symmetry. The line…

When introducing Trigonometry I usually ensure students draw and measure right triangles using any of the similar triangle properties. I then ask them to look for pattens w.r.t. ratio of sides. But if I fall short of time I’ll show them these three triangles and ask what they have in common. Students spot that…