Are all trigonometric functions really necessary? Student activity Play

Are the two triangles similar? Animation Play

Are two polygons similar? Animation Play

Area of a polygon Animation Play

Area of the floor Whiteboard exercise Play

Areas of geometric figures Student activity Play

Areas of polygons Student activity Play

Areas of polygons Whiteboard exercise Play

Areas of polygons Student activity Play

Areas of polygons Whiteboard exercise Play

Areas of polygons Whiteboard presentation Play

Areas of polygons Class activity Play

Areas of polygons made from trapeziums Whiteboard exercise Play

Areas of polygons made from trapeziums Student activity Play

Areas of polygons made of parallelograms Student activity Play

Areas of polygons made of parallelograms Whiteboard exercise Play

Areas of polygons made of triangles – problems Whiteboard exercise Play

Areas of polygons made of triangles – problems Student activity Play

Areas of similar figures Student activity Play

Building a regular polygon Whiteboard exercise Play

Building the polygon with the biggest possible area Whiteboard exercise Play

Building the polygon with the shortest possible perimeter Simulation Play

Calculating the area of a polygon Student activity Play

Circle inscribed into a parallelogram Simulation Play

Circles inscribed and circumscribed Class activity Play