Experiment with tweening various properties of objects. Here is an example (click on each bar to see them change - I've pasted a picture of my code below):
1. Draw a shape on the stage.
2. Convert it into a button that will trigger a tween/tweens when you click it.
3. Open your code panel and create tweens in ActionScript to change various parameters of the buttons
Refer to the tweenInAS.fla code module for reminders about tweens
Refer to the online ActionScript 3.0 Language reference for properties of symbol buttons (the class is called "SimpleButton" - click on "Show Inherited Public Properties" to see all of your options)
Here are some:
scaleX: scale in the 'x' dimension
scaleY: scale in the 'y' dimension
(when you change both of these simultaneously you can create zooming)
rotationZ: rotate in the plane of the page
alpha: transparency (scale of 0 to 1)
Code for the bar tween example:
FINAL PRODUCT: tweens.fla