Alison Cook found maths-whizz:

• Moderately builds student knowledge“Good use for rapid recall of number facts”
• Moderately improves attainment“For those children who regularly complete Maths Whizz there is an improvement on their overall attainment and speed for completing tests and tasks”
• Slightly reduces attainment gap“This depends significantly on parental involvement of completing the homework”
• Does not significantly reduce teacher workload
• Slightly provides school data