Addition by Heart

Addition by Heart is a visual way to master foundation math facts – in just 5 minutes a day!

Our cards use colorful images and cutting-edge science to help you learn addition facts. Plus, there are games to unlock and explore, so you can keep playing with your cards even after you’ve mastered the facts.


  • Deck 1 – Dice Patterns (25 cards)
  • Deck 2 – Ten Frames (75 cards)
  • Deck 3 – Bar Diagrams (32 cards)

Bonus! Reference deck for teen numbers Includes a guide for _spaced repetition_ – scientifically proven as the best way to use flash cards to master facts.

Extra games and explorations mean Addition by Heart becomes a play-deck once each deck is mastered.

Addition by Heart

I audibly gasped when I opened @MathforLove‘s latest creation - Addition by Heart. I’ve been anticipating its arrival.

My 5yo wouldn’t put them down.

Designed with evidence-based principles in mind. The beauty is in the progression of how kids engage with each deck.

Liesl McConchie

Addition by Heart is a vibrant and engaging educational tool that parents and educators can use to inspire a genuine love for math in young learners.

National Parenting Center - Award-winning review

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