Dive into the building blocks of maths with Jelby. Number bonds, adding and taking away, place value, counting, fractions and money — rescue a new sea creature for every skill your child masters.
Maths Foundations Splash is a free online game your child can play right now, in any web browser on a tablet, phone or computer. No signup, no ads, no cost. They pick their age, meet Jelby, and start rescuing the reef.
▶ Play free nowThe 82-page full-colour activity workbook takes the adventure onto paper, with a friendly worked example, practice and a puzzle for every skill. Every book has the free game inside via a QR code.
Buy on Amazon · £7.99Built around the real UK teaching order for EYFS and Key Stage 1 (Reception, Year 1 and Year 2).
Number bonds to 10 and 20, the foundation every young mathematician builds on.
Confident addition and subtraction within 20, then within 100.
Tens and ones, so bigger numbers finally make sense.
Counting in 2s, 5s and 10s, and first steps toward times tables with 'groups of'.
Halves and quarters, and everyday money problems with real coins.
Master a skill and bring one of Jelby's friends home, with a full answers section for grown-ups.
Pop in your email and we'll send you free wall-charts and extra practice sheets. We'll only ever email you about Skill Sidekick learning resources.
No spam, ever · Made by a UK educator