"The best math online service that I have used... My thumbs up for Sumdog! " (GS, USA)

"My students BEG to play. Their speed & accuracy improved in just a few weeks!" (CK,Canada)

"At first math was hard. With sumdog its fun and easy!" (Zecheriah, student, Ohio, USA)

"My students LOVED sumdog. I have never seen them so eager..." (JT, KY, USA)

“Kids struggling with math facts are enjoying math again... We love Sumdog!” (KW, USA)