Density Whiteboard exercise Play

Density of substances Animation Play

Derivatives of the trigonometric functions in geometry Animation Play

Deriving the formula for the surface area of a sphere Animation Play

Describing the route of the ant Student activity Play

Describing the route of the ant Whiteboard exercise Play

Determining the units of equilibrium constant Animation Play

Determining the units of equilibrium constant Whiteboard exercise Play

Difference of squares Student activity Play

Different magnitudes of forces Animation Play

Dimensions of the figure Animation Play

Dividing into a given ratio Student activity Play

Drag force Whiteboard exercise Play

Drawing a parallelogram Whiteboard exercise Play

Drawing a parallelogram and calculating its area Whiteboard exercise Play

Drawing a polygon Whiteboard exercise Play

Drawing a polygon Whiteboard exercise Play

Drawing pins Animation Play

Easy calculations Student activity Play

Eclipses Whiteboard presentation Play

Eclipses Class activity Play

Effect of concentration on the reaction rate. Rate equation Class activity Play

Effect of concentration on the reaction rate. Rate equation Whiteboard presentation Play

Effect of concentration – a microscopic view Student activity Play

Eight 1-cm cubes Animation Play