Horizontal lines Student activity Play

How do equal angles imply parallel lines? Animation Play

How much does it cost? Student activity Play

How to calculate the magnitude of the resultant force Student activity Play

How to construct a line parallel to a given line Student activity Play

How to construct a line perpendicular to a given line Student activity Play

How to construct a line perpendicular to a given line Animation Play

How to construct a perpendicular bisector Animation Play

How to construct an isosceles triangle Student activity Play

How to construct the perpendicular bisector of a segment Student activity Play

How to estimate the gradient of a curve Animation Play

How to find the system of equations Student activity Play

How to find the system of equations Whiteboard exercise Play

Imperial units of length Student activity Play

Imperial units of length Animation Play

Increasing perpendicular distances Whiteboard exercise Play

Inequalities Whiteboard presentation Play

Inequalities Class activity Play

Inequalities (1) Class activity Play

Inequalities (1) Whiteboard presentation Play

Inscribed circles, circumscribed polygons Student activity Play

Integers on the number line Whiteboard exercise Play

Intercept form of a straight-line equation Student activity Play

Intercept form of a straight-line equation Animation Play

Interior and exterior angles Animation Play