Reasoning With 3D Objects

Australian curriculum number (ACMMG066; ACMMG063)

Who is this sequence for?

This sequence is for Year 3 students who have had prior experiences with identifying and creating symmetry in objects. They will need an understanding of transformations, particularly flips (reflections) and turns (rotations) and how these can be used to show congruency. Prior experience with 2D representation of 3D objects will also assist students with tasks.

Summary of learning goals

This sequence explores symmetry and the composition of three-dimensional objects. This will require students to interpret and represent three-dimensional objects in two dimensions. Students will apply their knowledge of transformations to show congruency or difference between objects. Applying transformations of these objects develops students’ mental rotation skills. Students’ abilities to work systematically are developed as they find all possible solutions in each task.