Approximation of the area under a curve Whiteboard presentation Play

Are all trigonometric functions really necessary? Student activity Play

Area between the graph of the sine and cosine function and the x-axis Whiteboard exercise Play

Area under a curve Whiteboard presentation Play

Area under a curve Class activity Play

Attraction between current-carrying conductors Animation Play

Basic trigonometric equations involving the sine and the cosine functions Student activity Play

Basic trigonometric functions Class activity Play

Basic trigonometric functions Whiteboard presentation Play

Basic trigonometric identities Student activity Play

Basic trigonometric identities Whiteboard exercise Play

Billiard ball collisions and the velocity vectors Student activity Play

Causes of ion formation (1) Student activity Play

Changing the sign of an angle Student activity Play

Comparing the graphs of the sine and the cosine Student activity Play

Comparison of the graphs of the sine and the cosine functions Simulation Play

Constructing the graph of the cosine function Animation Play

Constructing the graph of the cosine function Animation Play

Cosine function as a parameter Animation Play

Counting problems Whiteboard presentation Play

Counting problems Class activity Play

Creating the sequence from the blocks Animation Play

Deductions for algebraic transformations Whiteboard exercise Play

Deductions for algebraic transformations Student activity Play

Definition of basic trigonometric ratios Animation Play