A family of transition metals Animation Play

A line parallel to a given line Student activity Play

A line parallel to a given line Whiteboard exercise Play

A perpendicular through a point off the line Student activity Play

A perpendicular through a point on the line Student activity Play

Algebraic construction of an inverse function Student activity Play

Algebraic construction of an inverse function Whiteboard exercise Play

An angle congruent to a given one Whiteboard exercise Play

An angle congruent to a given one Student activity Play

An arch Student activity Play

An arch Simulation Play

An arch Whiteboard exercise Play

Angle bisector Student activity Play

Angle bisector Animation Play

Angles on a straight line and angles round a point Student activity Play

Application of inhibitors Animation Play

Application of limestone in construction Slideshow Play

Are two angles equal? Student activity Play

Beams and ropes Simulation Play

Beams and ropes Student activity Play

Beams and ropes Whiteboard exercise Play

Catalysts in industry Student activity Play

Chemical energy sources Student activity Play

Chords and diameters Student activity Play

Chords and diameters Simulation Play