16-square-cm square Whiteboard exercise Play

4-square-inch square Whiteboard exercise Play

A car moving at constant speed Animation Play

A cardboard model of a prism Animation Play

A carpet problem Animation Play

A circle circumscribed about a regular pentagon Whiteboard exercise Play

A circle circumscribed about a triangle Student activity Play

A circle circumscribed about a triangle Whiteboard exercise Play

A circle inscribed in a triangle Student activity Play

A circumference Animation Play

A closer look at the sine Whiteboard exercise Play

A closer look at the trigonometric ratios Student activity Play

A copper wire Animation Play

A cylinder Whiteboard exercise Play

A cylinder Whiteboard exercise Play

A cylinder Student activity Play

A cylinder Student activity Play

A diagonal of a cuboid Animation Play

A folded sheet of paper Animation Play

A fraction as a percentage Whiteboard exercise Play

A fraction as a percentage Student activity Play

A leaning tree Student activity Play

A leaning tree Whiteboard exercise Play

A maximum area Whiteboard exercise Play

A parcel of land Whiteboard exercise Play