Sides of the trapezium Animation Play

Sides of the triangles Animation Play

Simplification of equations Class activity Play

Simplification of equations Whiteboard presentation Play

Solving the equation with the unknown on both sides of the equation Whiteboard exercise Play

Spectral analysis Student activity Play

Spectroscope Animation Play

Statements about the given parallel circuit Whiteboard exercise Play

Supplementary, corresponding and alternate angles Whiteboard exercise Play

Supplementary, vertical, corresponding and alternate angles Student activity Play

Supplementary, vertical, corresponding and alternate angles Whiteboard exercise Play

Switches in parallel circuits Simulation Play

Symmetries with respect to parallel lines Whiteboard exercise Play

Symmetries with respect to parallel lines Student activity Play

Tangent parallel or perpendicular to a line Student activity Play

Tangent parallel to a line Whiteboard exercise Play

Tangent to a parabola Student activity Play

Tangent to a parabola parallel to the given line Whiteboard exercise Play

Testing current in a parallel circuit Illustration Play

The angle between two sides in a triangle Animation Play

The area of a triangle Animation Play

The connection of capacitors in parallel Student activity Play

The connection of capacitors in parallel Animation Play

The connection of capacitors in parallel Whiteboard exercise Play

The connection of capacitors in series Student activity Play