The number of egg cells Illustration Play

The number of lattice points on a disc Whiteboard exercise Play

The number of left-handed Animation Play

The number of roots of a non-polynomial equation Whiteboard exercise Play

The number of roots of a non-polynomial equation Whiteboard exercise Play

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

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

The number of roots of a polynomial equation Student activity Play

The number of roots of a polynomial equation Whiteboard exercise Play

The number of roots of a quadratic equation Student activity Play

The number of roots of a quadratic equation Whiteboard exercise Play

The number of roots of a quadratic equation with parameter Whiteboard exercise Play

The number of roots of a quadratic equation with parameter – example Animation Play

The number of roots of a quadratic equation – example Animation Play

The number of sequences Animation Play

The number of solutions Animation Play

The number of solutions Whiteboard exercise Play

The number of solutions of a quadratic equation Whiteboard exercise Play

The number of solutions of a quadratic equation Student activity Play

The number of solutions of a quadratic equation Simulation Play

The number of solutions of a quadratic equation Student activity Play

The number of zeros Whiteboard exercise Play

The number of zeros Whiteboard exercise Play

The number π Whiteboard exercise Play

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