Tweening means a change in shape or position. A change in shape of an object is called shape tweening and a change in position of the object is called motion tweening.
How to create motion tweening?
1) Open a new document and set its size to 200*200.
2) Select the oval tool (4 th position, right side in the toolbar) and draw an oval on the 1st frame.
3) On the 15th frame press F6 to create a new keyframe.
4) Move the object with arrow tool and change its position.
5) Again select 1st frame. Right Click and select the first option that says – ‘create motion tween'. Alternatively, in the properties panel, select motion tween from the tween option.
6) For motion tweening, the objects being used should be grouped. On both frames(frame 1 and frame 15), select the object and press CTRL+G.
7) A blue line appears from frame 1 to 10.(Make sure that the blue line that appears should be smooth not dotted.)
8) Press CTRL + ENTER to test your first motion tween.