BLACK HAIRED MAN IN BLACK HAT
by Austin Lawin
Austin's 4th grade math teacher writes, "Austin initially planned to make another fish
tessellation, just like what he did last time. Luckily, he didn't really do it."
Austin's tessellation is a reflection (flip, mirror, glide) tessellation. You can tell it's a reflection tessellation because each row of fish is repeated in the row below it, except the row below it is facing the other way and not upside-down..
This is also a two-theme tessellation, in this case fish + seaweed.
Here's a point to ponder: Is this a tessellation? Well, if these are faces, then the answer is "NO" because the chins and right sides are hidden behind other faces. Tessellations don't allow overlaps-- it's one of the rules. If, however, these are just abstract shapes, then the answer is "YES".