Building from the evidence-based learning progression in geometric reasoning from the RMFII project, this paper presents data from students' solutions to three problems in geometry and measurement situations to identify key components needed to nurture reasoning. To show emerging analytical reasoning students must coordinate multiple pieces of…

In this article, Rebecca Seah and Andrew Beencke explore the importance of developing critical thinking and spatial reasoning skills. They explore a series of activities designed to develop the visualisation and critical thinking skills with Year 4 students.