The most frequently observed data Animation Play

The mysterious box Animation Play

The negative exponent as a decimal Whiteboard exercise Play

The negative sign in front of the brackets Whiteboard exercise Play

The nth term expression Whiteboard exercise Play

The number of roots of a non-polynomial equation Student activity Play

The number π Whiteboard exercise Play

The number π and the formula for the circumference of a circle Student activity Play

The operation of a cell Animation Play

The operation of a cell Whiteboard exercise Play

The operation of a cell Student activity Play

The period of the tangent Whiteboard exercise Play

The period of the tangent Student activity Play

The periods of the sine and the cosine Student activity Play

The power of 10 with a negative exponent Whiteboard exercise Play

The power of 10 with a negative exponent Student activity Play

The powers of ten Student activity Play

The price of land Animation Play

The principle of conservation of charge Simulation Play

The principle of conservation of charge Student activity Play

The principle of conservation of charge Whiteboard exercise Play

The Pythagorean identity Whiteboard exercise Play

The quadratic function with one parameter and a constant value Whiteboard exercise Play

The quadratic function with one parameter and a constant value Simulation Play

The ratio of three values Student activity Play