The ratio of two values – more difficult problems Student activity Play

The ratios of more than two quantities Student activity Play

The refractive index Student activity Play

The relationship between atomic structure and the position of elements in periods Whiteboard exercise Play

The relationship between atomic structure and the position of elements in periods Student activity Play

The relative atomic mass Animation Play

The relative atomic mass and its units Whiteboard exercise Play

The relative atomic mass of a natural element Animation Play

The relative atomic mass of an element Whiteboard exercise Play

The rower Whiteboard exercise Play

The Rutherford model of the atom Student activity Play

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

The significance of transformers Student activity Play

The significance of transformers Whiteboard exercise Play

The sine and coordinates of the points Animation Play

The sine of an arbitrary angle Student activity Play

The spectral lines in the atomic spectrum of hydrogen Animation Play

The speed of runners Animation Play

The steepest part of a road Animation Play

The structure of atomic nucleus Class activity Play

The structure of atomic nucleus Whiteboard presentation Play

The structure of the atom Class activity Play

The structure of the atom Whiteboard presentation Play

The structure of the atom Class activity Play

The structure of the atom Whiteboard presentation Play