In this unit, students will become familiar with the properties of light by observing how light interacts with various objects in the environment. These observations help them gain an understanding of light sources and of materials that block or change the path of light and reflect light. From these investigations, students begin to learn that light travels in straight lines and can use this information to construct simple optical lenses.
The main focus of the unit is on inquiry, with an emphasis on observing and making inferences. Students become involved with light interacting with a variety of materials. Some materials are opaque, transparent or translucent; some materials will reflect, refract or disperse light. These interactions will lead students to make qualitative inferences about the behaviour of light. The unit also has a strong technology focus, with students exploring the functions of various optical devices that have been developed over time.
There are six lessons focusing on all the outcomes of the Grade 4 Science curriculum for the study of Light.
Other resources available for Grade 4 Science are:
Grade 4 Science I Can Statements
Habitats - Grade 4 Science
Rocks, Minerals and Erosion