We started off by going over the homework, then we tested to see if the laser can split like in the game. It doesn't split the same way in real life, it was more of a flashlight.
Then we went over how a laser reflects and refracts in a triangular prism, and how a flashlight makes a rainbow when it goes through a prism. We went over what a rainbow was and how white light bent to create one. Certian colors of light slow down more than others so that they seperate and turn into the rainbow. When a second prism is held up to the rainbow it becomes white light again. We saw Newton's model of light going through a prism.
http://www.buzzle.com/articles/color-spectrum-chart.html her is an article with a picture of Newtons theory. GS