A boat on the coordinate system Animation Play

A circle and quadrants of the coordinate system Whiteboard exercise Play

A circle in the coordinate system Whiteboard exercise Play

A 'day' longer than a 'year' Student activity Play

A 'day' longer than a 'year' Whiteboard exercise Play

A disc in the coordinate system Animation Play

A figure under reflection in the coordinate system Animation Play

A game in the coordinate system Student activity Play

A linear function in the argument Whiteboard exercise Play

A linear function in the argument Student activity Play

A microscope Student activity Play

A microscope Whiteboard exercise Play

A negative value of the discriminant Whiteboard exercise Play

A negative value of the discriminant Student activity Play

A positive and a negative square root Whiteboard exercise Play

A range of sizes Animation Play

A rectifying system Whiteboard exercise Play

A rectifying system Student activity Play

A rectifying system Animation Play

A refracting telescope Student activity Play

A refracting telescope Animation Play

A segment square root of 2 units long and others Animation Play

A square in a coordinate system Whiteboard exercise Play

A square root Animation Play

A square root Student activity Play