MathTappers: Find Sums is an educational game designed to help learners make sense of addition and subtraction while improving their accuracy and speed. The game offers two modes for different age groups. In the first mode, younger learners can count apples on a grid to choose a pair of numbers that will fill all the blank spaces with apples. The second mode uses a symbolic part-part-whole model, allowing older learners to recognize addition and subtraction facts efficiently. The goal is to select two numbers that add up to the value in the bottom space.

Parents are encouraged to engage with their child, asking them to explain their strategies and how they determine the other number. The game aims to supplement instruction and provide a self-paced activity for mastery and fluency. Building fluency in addition and subtraction is crucial for success in later mathematics.

For educators, MathTappers: Find Sums is designed to help learners master basic addition and subtraction facts with understanding. The game presents useful models to support sense-making, rather than relying on flashcards. Learners develop a sense of the relationship between addends and sums, fostering mastery of both addition and subtraction facts concurrently.

MathTappers: Find Sums is a free app created by Tim Pelton and Leslee Francis Pelton, math educators and researchers. The app offers additional features for a minimal fee, with revenues supporting research and further development of the MathTappers App collection. Play, explore, and understand with MathTappers: Find Sums!