Switches Animation Play

Switches in parallel circuits Simulation Play

Symmetries with respect to parallel lines Student activity Play

Symmetries with respect to parallel lines Whiteboard exercise 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

Testing current in a series circuit Illustration Play

The area of a triangle Animation Play

The connection of capacitors in parallel Animation Play

The connection of capacitors in parallel Whiteboard exercise Play

The connection of capacitors in parallel Student activity Play

The connection of capacitors in series Student activity Play

The connection of capacitors in series Whiteboard exercise Play

The defects of lenses Student activity Play

The equation of a tangent to a circle Whiteboard exercise Play

The equation of a tangent to a circle Student activity Play

The flow of heat energy Student activity Play

The flow of heat energy Slideshow Play

The gradient of a line Whiteboard exercise Play

The gradient of a line Student activity Play

The influence of physical effort on the pulmonary circulation Slideshow Play

The pairs of parallel faces in the cube Whiteboard exercise Play