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 population growth curve Whiteboard exercise Play

The population mean 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

The Sahara and the Gobi Desert Whiteboard exercise Play

The sequence depending on the term's number Student activity Play

The sequence depending on the term's number Whiteboard exercise Play

The sequence in a settled order Whiteboard exercise Play

The sequence in a settled order Student activity Play

The significance of changes in blood group distribution Slideshow Play

The significance of variation Student activity Play

The sum and the difference of irrational numbers Whiteboard exercise Play

The systematic-sampling method Animation Play