Build up second graders’ math knowledge with a diving game about three-digit addition.

Children use their addition knowledge to complete equations in a race to reach the sunken treasure.

Children hone their knowledge of addition and missing addends in a race to reach the sunken treasure.

Children use their knowledge of addition to snap pictures of unique dinosaurs in this fun math game!

Kids practice matching each addition equation to its missing factor in this interactive math game.

Fill in these addition facts! This game challenges kids to match missing addends to each equation.

Children use their mental math skills to determine which equations add up to 20 in this math game.

Help young learners identify the correct fact family equations in this exciting addition game.

How do you make 10? Dive into a math adventure and discover simple equations that add up to 10.

Find the sum of 12 plus 8 and other combinations that make 20 in this online diving adventure.

In this energizing math game, think about how different numbers can add up to 20.

Reinforce your child's three-digit addition skills with this ski-themed learning adventure!

Which equation looks right? Review fact families and addition to 10 in this educational math game.

Children race down the river and across the finish line by choosing the equations that make 20.