This academic paper by Laura A. Outhwaite, Anthea Gulliford and Nicola J. Pitchford (University of Nottingham) and Marc Faulder (Burton Joyce Primary School) is titled – A Randomized Control Trial Raising Early Achievement in Math With Interactive Apps.
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It is the first pupil-level randomised control trial in the United Kingdom of interactive maths apps designed for early years education. This means that it carries significant academic weight.