The letters in algebraic expressions, formulas, equations and functions Whiteboard exercise Play

The meaning of the chemical formulae Whiteboard exercise Play

The modern periodic table Animation Play

The modern periodic table (1) Student activity Play

The modern periodic table (2) Student activity Play

The modulus function Class activity Play

The modulus function Whiteboard presentation Play

The nature of chemical reactions Student activity Play

The perfect square and quadratic equations Animation Play

The perfect square in quadratic equations Animation Play

The points and the equations of the functions Whiteboard exercise Play

The properties of chemical compounds and their constituent elements Student activity Play

The properties of chemical compounds and their constituent elements Slideshow Play

The quadratic equations Animation Play

The quadratic formula Class activity Play

The quadratic formula Whiteboard presentation Play

The reaction between nitrogen and hydrogen Animation Play

The reaction between sodium and water Animation Play

The reaction of sodium hydroxide solution with a solution of a zinc(II) salt Whiteboard exercise Play

The relationship between the electronegativity of elements and the chemical properties of their compounds Student activity Play

The role of enzymes in chemical digestion Animation Play

The same solution of two systems of linear equations Whiteboard exercise Play

The scalar product (1) Whiteboard presentation Play

The solution set of the linear equations Whiteboard exercise Play

The stability of alkaline-earth-metal carbonates Student activity Play