Colored Post Its instead of paper for trajectories

[Kristie Reighard]

In the second part of the activity, I used different colored post it notes instead of the dots on the roll of paper. I handed each student three different colors (one for each speed). As the ball came in front of them, they put the sticky note on the wall. The trajetories for the different speeds were easy to see and a lot easier than putting paper up on the wall. This really worked well and it was cheap!