Cm What to do: 1. Make a 2 inches hole at the center of the 3 pieces illustration boards. 2. Get a flashlight and aim it at a distant wall. Observe the path of light. Record your observation. 3. Block the path coming from the flashlight with a thick cardboard. Record your observation. 4. Hold each of the cardboard with a hole. Make sure the holes are aligned in such a way that the wall could be seen through the holes. 5. Aim the flashlight through the first hole. Observe what happens. 6. Misalign the middle cardboard your sister or brother is holding. Keep the light aimed at the cardboards. Observe what happens. Guide Questions: 1. What happened to the light when the cardboards' holes were aligned? 2. What happened to the light when the cardboards' holes were not aligned? 3. Did the light form a straight line when you aimed it on the wall without blockage? 4. When you blocked the light with a thick cardboard, was it able to pass through the light? What was formed behind it? 5. When you aligned the cardboards with holes, was the light able to pass through? What was its path? 6. What can you say about the way light travels?







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