The hidden patterns Animation Play

The information from the graph Animation Play

The investment Student activity Play

The investment Whiteboard exercise Play

The investment – a more difficult problem Student activity Play

The letters in algebraic expressions, formulas, equations and functions Student activity Play

The letters in algebraic expressions, formulas, equations and functions Whiteboard exercise Play

The loan Whiteboard exercise Play

The loan Student activity Play

The money spent by Lena Whiteboard exercise Play

The new price Whiteboard exercise Play

The new price of the dress Animation Play

The new prices of the dresses Whiteboard exercise Play

The price cuts Whiteboard exercise Play

The price of a ball-pen Whiteboard exercise Play

The price of a cinema ticket Whiteboard exercise Play

The price of a notebook Simulation Play

The price of airline ticket without the discount Whiteboard exercise Play

The price of book Whiteboard exercise Play

The price of cake Whiteboard exercise Play

The price of fabric Whiteboard exercise Play

The price of petrol Whiteboard exercise Play

The price of raspberries Whiteboard exercise Play

The price of skis Whiteboard exercise Play

The price of Yoko's dress Whiteboard exercise Play