Geometry lesson: Collapsible chair model

We live in a 3-dimensional world but why is it that we start teaching geometry we start from 2-dimensions to 3-dimensions? Shouldn’t it the other way around? Aren’t we supposed

Teaching with GeoGebra – Investigating coordinates of points

The most basic mathematics students need to know to understand GeoGebra is the coordinate axes. Must you teach students how to plot points and interpret coordinates of points before they use

Teaching simplifying and adding radicals

The square root of a number is usually introduced via an activity that involves getting the side of a square with the given area. For example the side of a square