In week 2, I learned 12 principles of animation: Squash and stretch; Timing and Motion; Anticipation; Staging; Follow-through and Overlapping Action; Slow in and slow out; ArcSecondary action; Timing; Exaggeration; Solid drawing; Appeal.
Also, the assignment is to create a critique ball animation, I created a blocking animation first, splined it and polished in the end.