* Here's a shuffle
* Making shuffles
** Drag them from the pile
** Expand and Contract
** Changing the shuffle
* Some shuffles look different but are really the same
** Sort these shuffles out
* Shuffles rearrange things
** Applying shuffles to things
** Playing a shuffle
** Rotating shapes
** Reflecting shapes
** Other transforms
* Sometimes a shuffle doesn't change anything at all
** Symmetries of a triangle
** Symmetries of a square
** Symmetries of a marked square
** Symmetries of equations
** Libraries
*** Shapes
*** Objects
* You can combine shuffles
** Adding a shuffle to another shuffle
** Zipping up a shuffle
* Shuffle Algebra
** Does it matter where you put it?
** Every shuffle has an unshuffle
** Any combination of shuffles is just a simple shuffle
** There's a special do-nothing shuffle
** Zipping from the top and Zipping from the bottom
* Classifying 3-shuffles
* Swaps
* Cycles
* Identity
* Generating 3 Shuffles
** from cycles
** from single swaps
** from both swaps