The ratios of more than two quantities Student activity Play

The resistance of a wire Animation Play

The resistance of a wire and its dimensions Simulation Play

The resistance of a wire and its dimensions Student activity Play

The rhombus Student activity Play

The rhombus and the circle Whiteboard exercise Play

The rhombus and the circle Student activity Play

The same force – different effects Animation Play

The same units Animation Play

The second tangent theorem – equality in length Whiteboard exercise Play

The second tangent theorem – equality in length Student activity Play

The shorter way Animation Play

The sides of isosceles triangles Student activity Play

The sides of the triangles – trigonometric ratios for selected angles Whiteboard exercise Play

The size of the image and the focal length of a mirror Simulation Play

The size of the image and the focal length of a mirror Student activity Play

The size of the image and the focal length of a mirror Whiteboard exercise Play

The Solar System Whiteboard presentation Play

The space diagonal of a cube Animation Play

The space diagonals of a cube Student activity Play

The speed of light Student activity Play

The square inscribed in a circle Whiteboard exercise Play

The standard index form on the calculator display Student activity Play

The stretching of a spring Animation Play

The sum of powers of 10 Simulation Play