Relating addition and subtraction and playing the game BUMP; counting down. Relating addition and subtraction and playing the game BUMP; Working with numbers, starting with a number and counting down ...

What do you get when you add up more than a billion dollars, plus a foundational but often overshadowed K-12 subject, and multiply it by the influence of the biggest player in K-12 education ...

In fourth grade, students focus most on using all four operations - addition, subtraction, multiplication, and division - to solve multi-step word problems involving multi-digit numbers. Fourth-grade ...