The Substitution Game features low-floor, high-ceiling cooperative play that works with any age (or with a mixed-age group) — and you can use it while distance learning, too. It’s great for building algebraic thinking.

Excerpted from my new book, *Prealgebra & Geometry: Math Games for Middle School*. Look for it at your favorite online bookstore.

## The Substitution Game

**Math Concepts:** addition, subtraction, multiplication, division, order of operations, integers, fractions, equivalence and substitution.

**Players:** any number (a cooperative game).

**Equipment:** whiteboard and markers (preferred) or pencil and paper to share. Calculator optional.