Day 80: Law of Reflection

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Science 8 – I showed the classes a video of pool balls bouncing on a pool table.  From this, the students were broken into groups and asked to come up with a rule that describes the path that the balls travel when bouncing.  They wrote their rule down on whiteboards, and almost all groups independently came up with the Law of Reflection.  A few groups wondered if the ball always bounces back in a 90º angle.

The students were then asked to shift their rule over to the reflection of light. On their whiteboards I drew where I would place a mirror and a laser. They had to predict the path that the reflected laser would take.  Most students did not have a protractor, but most came pretty close.  The photo above shows one group that came very close.

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