Jonathan McCabe found Sumdog Maths:

• Significantly reduces teacher workload“After our arithmetic work each morning, the children are engaged to complete their set questions to be able to move onto Sumdog for additional practice. Sumdog is often used at the end of Maths lessons or as Maths starters to enthuse the children too.”
• Significantly improves teaching efficiency“It ensures no wasted time as it is such a valuable, worthwhile resource for children to access.”
• Moderately improves attainment“It has sharpened our children’s Maths skills and ensured regular revisiting of key Maths concepts to ensure the children can practise these regularly in short bursts which aids their long term understanding.”
• Significantly builds student knowledge“The children get short bursts of content from across the KS2 Maths curriculum. This allows them to revisit concepts regularly to boost the chances of them retaining the information on a long term basis.”