The School Mathematics Project
Registered Charity Number 274767

The following guidance is for schools preparing for WJEC specification 184 using the SMP Interact GCSE books.

References in brackets are to chapter and section.

Foundation

Significant topics not covered in the book: use of standard index form on a calculator; drawing and interpreting graphs of the form y = x2 + a

Items that may need to be reinforced while working through the book: relating ratios to fractions, decimals and percentages (39EF); scales expressed in the form 1:500 (51B); volume of simple composite solids (55AB); recognition of misleading graphs (43CD); probability expressed as a percentage (36A)

Intermediate

Significant topics not covered in the book: drawing a graph of the form y = a + b/x

Items that may need to be reinforced while working through the book: volume of composite solids (16AB); when drawing a line of best fit, doing so through the point representing the means of the two variables (22B); probabilities expressed as percentages (34A); understanding that probabilities must be mutually exclusive if they are to be added (58D); the terms 'appreciation' and 'depreciation' (for repeated proportional changes) (48B), 'sector' (61A), 'angle of elevation/depression' (49F)

Higher

Significant topics not covered in the book: tangents to graphs of non-linear functions representing rate of change; interpretation of area under a graph (other than a histogram); given a graph of the form y = pq^x, finding the values of p and q, standard deviation

Items that may need to be reinforced while working through the book: when drawing a line of best fit, doing so through the point representing the means of the two variables (13H); probabilities expressed as percentages (17B); use of the statistical functions on a calculator (7A), the terms 'angle of elevation/depression' (11F)

General

Several topics listed in the specification (particularly in the Intermediate and Higher tiers) are treated in the books as assumed knowledge.

The above guidance is given in good faith to help you plan your teaching. You should always check the latest documentation from the WJEC as you prepare students for the examination.