The number of bricks Animation Play

The number of car accidents Animation Play

The number of common points of the coordinate axes and the circle Whiteboard exercise Play

The number of common points of the coordinate axes and the disc Whiteboard exercise Play

The number of decayed nuclei and the number of remaining Animation Play

The number of decayed nuclei and the number of remaining Whiteboard exercise Play

The number of decayed nuclei and the number of remaining nuclei Student activity Play

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 Student activity Play

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

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

The number of roots of a polynomial equation Whiteboard exercise Play

The number of roots of a polynomial equation Student activity 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 Simulation Play