The line and the circle Student activity Play

The line and the circle Whiteboard exercise Play

The normal and the tangent to a circle Student activity Play

The normal and the tangent to a circle Animation Play

The normal and the tangent to a circle Whiteboard exercise Play

The normal to a curve Student activity Play

The normal to the circle Animation Play

The parabola Student activity Play

The parabola Animation Play

The perimeter of the triangle and the diameter of the big circle Animation Play

The period of the tangent Student activity Play

The period of the tangent Whiteboard exercise Play

The period of the trigonometric functions Animation Play

The perpendicular bisector Whiteboard exercise Play

The point of tangency Whiteboard exercise Play

The points on a straight line Animation Play

The properties of the graph of the tangent function Whiteboard exercise Play

The reasons for using circles Animation Play

The resultant force Animation Play

The resultant force Whiteboard exercise Play

The resultant force Student activity Play

The same values of the tangent function Whiteboard exercise Play

The second derivative of an arbitrary rational power of  x Whiteboard exercise Play

The second division of the cells Animation Play

The Second Law of Thermodynamics Whiteboard presentation Play