The circle with centre at an arbitrary point Whiteboard exercise Play

The concept of pH 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 parallel Student activity Play

The connection of capacitors in series Animation Play

The connection of capacitors in series Whiteboard exercise Play

The connection of capacitors in series Student activity Play

The conversion graph Whiteboard exercise Play

The coordinates of a given point Simulation Play

The coordinates of the marked points Whiteboard exercise Play

The correctness of a construction Student activity Play

The correctness of a construction Animation Play

The cosine and coordinates of the points Animation Play

The cosine of an arbitrary angle Student activity Play

The cost of notebooks Whiteboard exercise Play

The cost of pencils Whiteboard exercise Play

The C–X bond Animation Play

The C–X bond (1) Student activity Play

The defects of lenses Student activity Play

The derivation of the formula Animation Play

The derivative of the function y = ln|x| at the point Whiteboard exercise Play

The derivative of the natural exponential function at the point Whiteboard exercise Play

The derivative of the natural logarithmic function at the point Whiteboard exercise Play

The discovery of radioactivity Student activity Play