The beginning of the magic square Animation Play

The biggest possible area Animation Play

The circle and the equilateral triangle Student activity Play

The circle inscribed in a square Whiteboard exercise Play

The correct graph to read the rounded value of the square root Whiteboard exercise Play

The cost of a 3-day mountain trip Whiteboard exercise Play

The derivative of the square root of x Student activity Play

The derivative of the square root of  x Whiteboard exercise Play

The diagonal of a square Whiteboard exercise Play

The diagonal of a square Student activity Play

The difference of squares Animation Play

The difference of squares Animation Play

The difference of squares – common factor first Whiteboard exercise Play

The difference of squares – common factor first! Student activity Play

The dimensions of the paper sizes Whiteboard exercise Play

The distribution of the rational numbers over the number line Animation Play

The equal numbers Whiteboard exercise Play

The equilateral triangle and the square Whiteboard exercise Play

The exact area of a rectangle Whiteboard exercise Play

The formula for the difference of squares Whiteboard exercise Play

The formula for the difference of squares Student activity Play

The formula for the difference of squares Whiteboard exercise Play

The formula for the square of a difference Student activity Play

The formula for the square of a sum Student activity Play

The graph of the quadratic function Animation Play