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In this optics activity, learners use paint thinner to make a small jar seem to disappear inside a larger jar.

In this activity, learners test the Law of Reflection based on experimental evidence. Learners produce raw data and explanations based on their data: pencil tracings of incident and reflection rays.

In this four-part activity, learners explore light and sound through a variety of hands-on investigations.

In this activity, learners use a laser pointer, empty soda bottle, rubber plug and water to demonstrate total internal reflection.