Battista, Michael T. and Douglas H. Clements

Research into Practice: Using Spatial Imagery in Geometric Reasoning
Arithmetic Teacher

v39 n3 pl8-21 Nov 1991

Presents a discussion illustrating student reasoning while using LOGO to draw tilted squares and rectangles. Suggests that teachers recognize that many students use visual imagery to reason and discuss visual reasoning with students. Gives examples of tasks to promote discussion.