Summary Shine a flashlight through water at just the right angle to make a (subtle) rainbow. Science content Physics: Light and Sound (1) Earth/Space: Weather, Seasons, Climate Change (K, 1, 4, 7) Lessons activity is in Weather phenomena Materials jar half filled with water flashlight white sheet of paper Procedure Distribute glass of water, flashlight and white paper to each student or student pair. Ask them: We have water and sunlight. What weather feature might we make? Once they know they are looking for a rainbow, older students can be challenged to arrange the flashlight, jar and paper to make a rainbow, while younger students can be assisted in making one: Hold the jar in the air just above the desk. Lay the paper down in front of the jar. Shine the flashlight at the water line from back a bit, maybe angling it downwards a little. Don't block the bottom edge of the jar with your fingers. The higher the jar, the wider the rainbow. If you tip the jar slightly, you can make multiple rainbows. Grades taught Gr 1 Gr 2 Gr 3 Gr 4 Gr 5 Gr 6 Gr 7
