4a Additive reasoning for teenagers (pdf)

A pdf of a 42 slide PowerPoint showing an approach to additive for teenage students who have difficulties with mental maths . It employs a Linear Model for addition and subtraction.

It narrows the use of manipulatives to the counting stick, multilink cubes and base 10 materials.

It is designed to be used for Maths Dept CPD rather than for teaching students although some slides would be useful for teaching.

Years of experience of training Maths teachers, research and thinking has gone into this resource.

The actual Powerpoint is available to purchase and has animation to enable conceptual development to be brought into sharper focus. Some slides are difficult to interpret without the animation.