'Double quadratic' equations Student activity Play

Double-angle formula for the cosine Student activity Play

Double-angle formula for the sine Student activity Play

Double-angle formula for the tangent Student activity Play

Double-angle formulas Class activity Play

Doubling time changes Student activity Play

Down the hill Student activity Play

Drag and drag coefficient Student activity Play

Drawing a circle Student activity Play

Drawing a hexagon inscribed in a circle Student activity Play

Drawing a line of best fit Student activity Play

Drawing a plan Student activity Play

Drawing a square inscribed in a circle Student activity Play

Drawing a triangle symmetrical to a point Student activity Play

Drawing an equilateral triangle inscribed in a circle Student activity Play

Drawing angles Student activity Play

Drawing angles Student activity Play

Drawing circuits Student activity Play

Drawing conclusions Student activity Play

Drawing dots Student activity Play

Drawing graphs Student activity Play

Drawing marbles Student activity Play

Drawing marbles – a case study with a tree Student activity Play

Drawing prisms Student activity Play

Drawing reflection diagrams Student activity Play

Drawing simple shapes using ITC Class activity Play

Drawing the graph of an altered function Student activity Play

Drawing the graph of the sequence Student activity Play

Drug doses Student activity Play

Drugs Student activity Play