The grade 4’s and I have been learning about light and sound in their science unit while the grade 3’s were at full court press for EQAO. We have been talking about the properties of light and sound. For example, light travels in a straight line and it can be absorbed. For sound, it travels in waves or vibrations. The students and I conducted various experiments to test out the properties of light and sound. Below is a video to emphasize what a sound wave looks like. The students and I built a sound wave by taking shish-kabob sticks and placing a jujube on each end. Then we took duct tape and placed it in the middle. When one person hits an end, it creates a wave!
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