There is a growing interest in the value of teachers guiding students to generate their own representations to support conceptual learning in science and across complementary subjects such as mathematics. However, this approach to an interdisciplinary focus poses challenges for programme design and learning assessment. In this paper, we report on…

Describes the construction and operation of an apparatus used to study the optical properties of solids using reflection. (JRH)

Presents three demonstrations that can help teachers explain crystal properties. The equipment used includes a laser, quartz crystals, and chalk dust. The laser light enables students to observe characteristics of structure that cannot be made with white light. (DDR)

Describes the function of the various parts of the microscope and their integration in the formation of an optical image. Presents a procedure for setting up a microscope to obtain maximum resolution and contrast for each objective lens at all magnifications. (JRH)