How much/many has he got? Student activity Play

In Antarctica and in the desert Whiteboard exercise Play

Index laws for positive exponents Student activity Play

Is a difference an exact result? Whiteboard exercise Play

Juice Whiteboard exercise Play

Lena and the horse Whiteboard exercise Play

Lorry Simulation Play

Mental addition and mental subtraction Student activity Play

Mental subtraction Animation Play

Mental subtraction Whiteboard exercise Play

Mercury and lead Whiteboard exercise Play

Mistakes in adding and subtracting fractions Animation Play

Money calculations Whiteboard exercise Play

Money calculations – reckoning Student activity Play

Negative or positive? Student activity Play

Negative or positive? Simulation Play

Operations on fractions Class activity Play

Operations on fractions Whiteboard presentation Play

Operations on integers Whiteboard exercise Play

Operations on integers Student activity Play

Operations on the algebraic fractions in physics Student activity Play

Sequences formed by subtracting a fixed number Student activity Play

Sequences formed by subtracting a fixed number Animation Play

Sequences formed by subtracting a fixed number – sweets Whiteboard exercise Play

Subtract fractions Student activity Play