A circle circumscribed about a triangle Whiteboard exercise Play

A circle circumscribed about a triangle Student activity Play

Approximating the area Student activity Play

Approximating the area Whiteboard exercise Play

Arcs Student activity Play

Area and circumference – calculation problems Student activity Play

Areas of figures Student activity Play

Areas of shapes Whiteboard exercise Play

Areas of shapes Student activity Play

Circle circumscribed about a triangle Animation Play

Construction of an egg Animation Play

Famous figures bounded by semicircles Student activity Play

Famous figures bounded by semicircles – arbelos Whiteboard exercise Play

Famous figures bounded by semicircles – salinon Whiteboard exercise Play

Finding the volume of a sphere Animation Play

Inscribed and central angles Whiteboard presentation Play

Inscribed and central angles Class activity Play

Inscribed angle in a semicircle Whiteboard exercise Play

Inscribed angle in a semicircle Student activity Play

Inscribed right angle Animation Play

Parts of the circle Student activity Play

Parts of the circle Whiteboard exercise Play

'Rounded' Pythagorean theorem Animation Play

Sectors and segments Student activity Play

Shapes bounded by arcs Whiteboard exercise Play