The following extract is taken from the Standards Site 

Pupils need to be able to select the mathematics required to solve a problem and to recognise that an idea that they meet in one strand of mathematics can be applied in another. A good 'diet' will include:

• problems and applications that extend content beyond what has just been taught
• familiar and unfamiliar problems in a range of numerical, algebraic and graphical contexts, some with a unique solution and some with several possible solutions
• activities that develop short chains of deductive reasoning and concepts of proof in algebra and geometry
• occasional opportunities to sustain thinking by tackling more complex problems. 

To access some relevant website reviews - Click here
For relevant Numeracy framework pages - Click here
For some resources that NRICH have put together highlighting the MPA's - Click here

Monitoring MPA within Mathematics could be done using a cover sheet where for a unit of work opportunities for teaching and consolidating their MPA skills could be recorded - Click here for a KS3 exemplar which includes the Years 7, 8 and 9 processes.

For a range of Contextual Problems - Click here

Other Sources of Materials