Differentiated cells – leaf and palisade mesophyll cells Whiteboard exercise Play

Differentiated cells – leaf and palisade mesophyll cells Student activity Play

Digital encoding of an image Whiteboard exercise Play

Digital encoding of an image Student activity Play

Digital encoding of analogue signals Student activity Play

Digital encoding of analogue signals Whiteboard exercise Play

Digital image Animation Play

Direct proportion Whiteboard presentation Play

Direct proportion Class activity Play

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

Discriminant of the quadratic equation Whiteboard exercise Play

Discs in the coordinate system Student activity Play

Diseases of the respiratory system Simulation Play

Diseases of the respiratory system Student activity Play

Distance formula in 3-dimensional space Student activity Play

Disturbances in the functioning of the lymphatic system Illustration Play

Dividing surds Whiteboard exercise Play

Dividing surds Whiteboard exercise Play

Dividing surds Student activity Play

DNA repair system Animation Play

Double circulatory system in mammals Animation Play

'Double quadratic' equations Student activity Play

Drugs affecting the nervous system Slideshow Play

Drugs and the nervous system Slideshow Play

Dynamic state of chemical equilibrium Student activity Play