The cost of a 3-day mountain trip Whiteboard exercise Play

The distribution of the rational numbers over the number line Animation Play

The equal numbers Whiteboard exercise Play

The highest common factor of numbers 33 and 44 Animation Play

The missing numbers Whiteboard exercise Play

The missing numbers Game Play

The missing numbers in the expressions Whiteboard exercise Play

The missing numbers in the rectangles Whiteboard exercise Play

The number of sequences Animation Play

The numbers and their multiples Whiteboard exercise Play

The numbers and their multiples Whiteboard exercise Play

The numbers divided by 3 and 9 Animation Play

The numbers in Pascal's Triangle Whiteboard exercise Play

The numbers in the rectangles Animation Play

The numbers in the rectangles Animation Play

The numbers of tennis players Whiteboard exercise Play

The numbers on the diagram Whiteboard exercise Play

The numbers on the vertical axis Whiteboard exercise Play

The opposite numbers – a dolphin Simulation Play

The perimeter of the triangle and the diameter of the big circle Animation Play

The principal and azimuthal quantum numbers Animation Play

The ratio of two numbers Animation Play

The result of a random experiment Student activity Play

The result of a random experiment Whiteboard exercise Play

The result of addition and subtraction of rational numbers Animation Play