Cyclic numbers Animation Play

Dealing with very large and very small numbers Animation Play

Determination of numbers of cells Student activity Play

Determination of numbers of cells Whiteboard exercise Play

Different questions about the same operation Whiteboard exercise Play

Different questions about the same operation. How many times more? How many times less? Student activity Play

Different questions about the same operation. How much more? How much less? Student activity Play

Dividing natural numbers Student activity Play

Dividing negative numbers Whiteboard exercise Play

Dividing numbers in standard index form Animation Play

Division involving irrational numbers Student activity Play

Division involving irrational numbers Whiteboard exercise Play

Division of rational numbers Whiteboard exercise Play

Division of rational numbers Student activity Play

Division with remainder – positive numbers Whiteboard exercise Play

Drawing opposite vectors Whiteboard exercise Play

Encoding numbers Student activity Play

Equal numbers Whiteboard exercise Play

Equal numbers – wrong steps in proof Whiteboard exercise Play

Equally accurate rounding Student activity Play

Explain and justify Class activity Play

Explain and justify Whiteboard presentation Play

Exterior angle of a triangle Whiteboard exercise Play

Exterior angle of a triangle – exercises Student activity Play

Exterior angle of a triangle – observation and proof Student activity Play