I think my teachers are obsessed with spheres

Not to long ago I worked on a project for class where, surprise; we made balls bounce in 3d. When working on this, I put 3 videos on my desktop, of three different balls. I used Photoshop to mark the frames and height of each ball. I then created 3 balls in Maya, each with different sizes. I then applied materials, textures and bump maps for each. I then applied the frames and height of each ball to my animation. I tried rendering each frame, but I couldn't figure it out so, what I could get is shown below.