## Overview

“Does order matter?” This single question causes endless headache and woe for student and teacher alike when forced to think in the paradigm of permutations and combinations. My advice: Don’t think that way! Here’s how to naturally and easily understand and do combinations and permutations without ever doing them!

## Lessons

 1.0 The Approach in a Nutshell 1.1 Three Different Problems that are actually the Same!
 2.0 The Four Steps to Understanding Everything! 2.1 STEP ONE: The Multiplication Principle 2.2 STEP TWO: Word Games 2.3 Aside: Making Sense of 0! 2.4 Aside: Leonhard Euler and Factorials 2.5 STEP THREE: The Labeling Principle 2.6 Putting the Labeling Principle to Use 2.7 Aside: If you are curious about “Permutations and Combinations” 2.8 STEP FOUR: Multiplication and Labeling Together 2.9 Extra: Fun with Poker Hands
 3.0 Pascal’s Triangle 3.1 A Grid of Numbers 3.2 The Stocking Property 3.3 Pascal’s Triangle 3.4 More Patterns 3.5 The Binomial Theorem 3.6 Lots of Practice 3.7 Yet More Practice 3.8 Still Yet More Practice!

## Books

Take your understanding to the next level with easy to understand books by James Tanton.

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## Guides & Solutions

Dive deeper into key topics through detailed, easy to follow guides and solution sets.

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