Changing the subject of the formula Student activity Play

Diamonds Whiteboard exercise Play

Emmanuel's and Lena's number Whiteboard exercise Play

Emmanuel's number Animation Play

Equation with two unknowns Whiteboard exercise Play

Equations with brackets Whiteboard exercise Play

Equations with brackets Whiteboard exercise Play

Equations with brackets Student activity Play

Equations with two unknowns Student activity Play

Example of solving a rational equation Animation Play

Examples of quadratic equations Whiteboard exercise Play

Examples of quadratic equations Student activity Play

Formulas Student activity Play

Fractions in the equations Animation Play

Guessing date of birthday Simulation Play

Guessing your number Game Play

Harry's number Whiteboard exercise Play

How does it work? Animation Play

Inverse operations Whiteboard exercise Play

Inverse operations Student activity Play

Lena's number Whiteboard exercise Play

Letters in equations Student activity Play

Mixed problems Student activity Play

Multiplying both sides of the equation Whiteboard exercise Play

Multiplying both sides of the equation Student activity Play