Digital encoding of images Slideshow Play

Discriminant of the equation ax 2 + bx + c = 0 Student activity Play

Discriminant of the quadratic equation Whiteboard exercise Play

Dividing surds Whiteboard exercise Play

Dividing surds Whiteboard exercise Play

Dividing surds Student activity Play

Do any two balls attract one another? Student activity Play

Do any two balls attract one another? Whiteboard exercise Play

'Double quadratic' equations Student activity Play

Drawing one ball Animation Play

Each one of us is different Student activity Play

Each one of us is different Whiteboard exercise Play

Effect of concentration on reaction equilibrium Student activity Play

Equalities with roots Whiteboard exercise Play

Equations with one variable Whiteboard exercise Play

Equations with one variable Student activity Play

Essential minerals Student activity Play

Estimation of the roots of a quadratic equation Whiteboard exercise Play

Estimation of the roots of a quadratic equation Student activity Play

Estimation of the roots of a quadratic equation Whiteboard exercise Play

Estimation of the roots of a quadratic equation – example Animation Play

Estimation of the roots of a quadratic equation – example Animation Play

Examples of fractional exponents Whiteboard exercise Play

Examples of rationalising the denominator Animation Play

Examples of roots of any order as the powers Animation Play