CONNECTED IDEAS, FLEXIBLE ROUTES
Your learning path.
Follow the prerequisites, or demonstrate what you already know. Reading is always open.
1
BUILD YOUR UNDERSTANDING
Signed arithmetic
Your starting point · Whole-number arithmetic assumed
Making sense of negative numbers →2
BUILD YOUR UNDERSTANDING
Inverse operations
Builds on: Signed arithmetic
Operations that undo each other →3
BUILD YOUR UNDERSTANDING
Preserving equality
Builds on: Inverse operations
Keep the equation in balance →4
BUILD YOUR UNDERSTANDING
Two-step equations
Builds on: Preserving equality
Keep the equation in balance →