Wave
This is just a wave i created using motion tweening. I made my own shape using the pen tool and then made a keyframe on frame 30 and moved my shape to the other side of the screen. Then made a motion tween. Making it look like a never ending wave.
Bouncing Ball
I created this bouncing ball using frame-by-frame animation and i actually redrew the ball in a new position every time to create an animation effect. I also changed the color of the ball in each frame just to make it look a little cooler.
Tweening
Here i used the star tool to make a simple shape, then i made a keyframe a few frames down and drew a weird ghost shape thing using just the brush tool. I then used the tween shape option to create a shape tween between the two pictures.
Walk Cycle
I made this walk cycle using frame by frame animation, I drew the man walking in different positions over and over in each frame and then strung them together to create an animation. I added the sun in the background using just the brush tool and changed it in each frame to make it look like the sun was setting.