The weight of the bananas and the apples Animation Play

Two-part calculations Student activity Play

Two-part calculations Whiteboard exercise Play

Using the distributive property Animation Play

Vector addition Student activity Play

Vector addition Whiteboard exercise Play

Vector addition Whiteboard exercise Play

Vector addition Student activity Play

Vector addition Whiteboard exercise Play

Vector subtraction Student activity Play

Vehicles Whiteboard exercise Play

What are polymers? (1) Student activity Play

What are polymers? (1) Whiteboard exercise Play

What can you afford in the Internet Café? Student activity Play

What comes next? Animation Play

What comes next? Student activity Play

What comes next? Whiteboard exercise Play

What is the missing number? Student activity Play

Why are they sums? Animation Play

Work and the time necessary to perform it – part 1 Student activity Play

Work and the time necessary to perform it – part 2 Student activity Play

Write the sum using powers of 10 Student activity Play

Write the sum. Place value Student activity Play

Write the sum. Place value Whiteboard exercise Play

Writing numbers as the sum of powers of 10 Whiteboard exercise Play