This is one of many Harvard references to useful online references for the Level 5 Maths ADTLLS, Developing Role of Numeracy / History of Mathematics essay. (Part of Module 1: Approaches to Mathematics learning and teaching). The retrieval date is when I first used it.
Here’s how I used the reference in my essay: Cockcroft devoted several chapters of his report to discussion of adults’ mathematics needs out of school. He noted that most employers were satisfied with the skills of school leavers and that, overall, employers most valued the ability to calculate mentally. Interestingly the importance of mental maths at work is reiterated more than 20 years later in research by both Hudson (2007, p10:5.3.1) and the Confederation for British Industry (2006, p6).