The cosine – reducing angles Student activity Play

The cytosol Student activity Play

The debt is decreasing Whiteboard exercise Play

The debt is increasing Whiteboard exercise Play

The debt is increasing. The debt is decreasing Student activity Play

The decimal as a negative exponent Whiteboard exercise Play

The decimal representation and the negative exponent Whiteboard exercise Play

The developing of film Animation Play

The distribution of electrons Animation Play

The effects of mutations in somatic cells – negative for the organism but positive for humans Slideshow Play

The effects of osmosis on the rate of transpiration Student activity Play

The effects of osmosis on the rate of transpiration Simulation Play

The electrochemical series Student activity Play

The enthalpy change for the transformation of solid sulphur into gaseous sulphide ions Whiteboard exercise Play

The flow of charge through a conductor Animation Play

The flow of charge through an insulator Animation Play

The force of attraction Animation Play

The functions of mineral ions in the organism Whiteboard exercise Play

The importance of mineral ions Whiteboard exercise Play

The importance of mineral ions Student activity Play

The inner structure of the atom Student activity Play

The ions in the ocean Animation Play

The length of a metal rod Animation Play

The negative exponent as a decimal Whiteboard exercise Play

The negative sign in front of the brackets Whiteboard exercise Play