The best way to practice math is to play with it—to use the patterns and connections between math concepts in your pursuit of something fun or beautiful.

Diffy Inception puzzles have their own symmetric beauty, but mostly they are just plain fun. Students can practice subtraction and look for patterns in the difference layers.

I just published four new activity books to our online store:

**Diffy Inception: Subtraction Puzzles with Whole Numbers****Diffy Inception: Subtraction Puzzles with Fractions, Decimals****Diffy Inception: Subtraction Puzzles with Integers**- Or get all three in the
**Diffy Inception Bundle: Subtraction Puzzles from Primary Math to Prealgebra**

Notes to the teacher include puzzle instructions, game variations, journaling prompts, and more. Plus answers for all puzzles.

Available with 8 1/2 by 11 (letter size) or A4 pages.

My publishing company runs this online store, so you can find all my playful math books there — including an exclusive pre-publication ebook edition of my newest title, *Prealgebra & Geometry: Math Games for Middle School*. **Click here to browse the Tabletop Academy Press store.**