The fascinating polynomials (1 + x) n Student activity Play

The first tangent theorem – perpendicularity Student activity Play

The first tangent theorem – perpendicularity Whiteboard exercise Play

The floating buoy Animation Play

The formula for binomial coefficients Student activity Play

The formula for the area of a triangle Animation Play

The formula for the area of a triangle Animation Play

The formula for the space diagonal of a cube Student activity Play

The formula for the volume of a prism Whiteboard exercise Play

The formula for the volume of a prism Student activity Play

The game of Change Places Animation Play

The height of a tree Whiteboard exercise Play

The height of the equilateral triangle Whiteboard exercise Play

The hidden patterns Animation Play

The interior angles of a polygon Student activity Play

The interior angles of an n-sided polygon Whiteboard exercise Play

The isosceles triangle Whiteboard exercise Play

The law of cosines Animation Play

The law of sines Animation Play

The length of the altitude in the triangle Whiteboard exercise Play

The LOGO commands to obtain the given triangle Whiteboard exercise Play

The lunes of Hippocrates Student activity Play

The measure of the angle Whiteboard exercise Play

The measure of the angle in the triangle Whiteboard exercise Play

The method of 'halving the arcs' Whiteboard exercise Play