In recent years I have become interested in the idea of causing learners to ‘play around’ with ideas and resources. For example playing around with consecutive numbers using addition or multiplica- tion or playing around with sequences: “If the first three values of some sequences are 2, 3, 5... how could different sequences develop?” This short
piece of writing is about playing around with some
30° 60° 90° triangles. This emerged from an invita- tion to work in a primar y school to provide some input into ideas for classrooms about ‘shape and space.