Cubing a number Animation Play

Decimal approximation of the square root of 5 Animation Play

Derivatives of powers with rational exponent Class activity Play

Derivatives of powers with rational exponent Whiteboard presentation Play

Development of seed plants Slideshow Play

Developmental stages of seed plants Student activity Play

Differentiated cells – leaf and palisade mesophyll cells Whiteboard exercise Play

Differentiated cells – leaf and palisade mesophyll cells Student activity Play

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

Discriminant of the quadratic equation Whiteboard exercise Play

Dividing surds Student activity Play

Dividing surds Whiteboard exercise Play

Dividing surds Whiteboard exercise Play

'Double quadratic' equations Student activity Play

Effect of concentration on reaction equilibrium Student activity Play

Effect of external factors on the respiratory system Animation Play

Epidermal tissue – structure Student activity Play

Epidermis and rhizodermis Whiteboard exercise Play

Equalities with roots Whiteboard exercise 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