The arithmetic mean of two numbers Animation Play

The capacity of a cell Animation Play

The capacity of a cell Student activity Play

The cosine – reducing angles Student activity Play

The cost of a 3-day mountain trip Whiteboard exercise 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 distribution of the rational numbers over the number line Animation Play

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

The electrochemical series Student activity Play

The equal numbers 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 highest common factor of numbers 33 and 44 Animation Play

The inner structure of the atom Student activity Play

The length of a metal rod Animation Play

The missing numbers Whiteboard exercise Play

The missing numbers Game Play

The missing numbers in the expressions Whiteboard exercise Play