ALIEN FROGGY by Jasmine Lawrence
Jasmine's teacher, Ms. Huang, says "When Jasmine's friends told her that it looked like
frogs, she disagreed. That's why she named it alien froggy.
She used the cutting method. Well, all of them did."
This is a classic translational (slide) tessellation. You can tell it's a translational tessellation because the faces are all at the same angle-- they're simply copied and moved along the X axis (left-right) and Y axis (up-down), without rotating.
Is this a tessellation? Yes, absolutely. There are no gaps. Nor are there overlaps. They completely fill a 2D plane.