This is a collection of tasks about transformation, symmetry and tessellation.
This presentation provides some reference materials:
https://dl.dropboxusercontent.com/u/4210789/me/mini/tiling/index.html
More workshop materials are developed in a summer course for secondary students on these topics:
1. transformation and symmetry
http://tube.geogebra.org/student/b320095
2. tessellation
http://tube.geogebra.org/student/b320097
