Education Technology

Transformation 2 - Dilations, a graphical approach

Activity Overview

Beyond sliders and memorising, students need a good understanding of the reasoning behind transformations. This activity is the second part of three, focusing on the algebra behind dilations, starting with the discrete analysis, a single point, building to a family of points and finally an equation.


The aim of this activity is for students to develop an understanding of dilations through algebra rather than memorising formats and associating potentially erroneous logic.


  • Transformation
  • Dilation
  • Factor
  • Towards or Away from axis

About the Lesson

Students can edit the algebra that defines the dilated point. The discrete connection between the algebra and the visual helps students understand the connections.