Students practice addition and subtraction problems without regrouping. In this lesson, students practice addition and subtraction problems without regrouping using base-10 block manipulatives and ...

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 ...

Want to help your first-grader master math? Here are some of the skills your child will be learning in the classroom. Understand place value in one- and two-digit numbers. Understand that in two-digit ...

Scientific American presents Math Dude by Quick & Dirty Tips. Scientific American and Quick & Dirty Tips are both Macmillan companies. In the last episode, we learned an amazing trick that you can use ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Hi there. I'm Miss James and I'm so excited to be learning with you today. For this lesson, all you ...

Adding numbers can be made considerably easier by learning the proper techniques. Among these arithmetic strategies, the "Make 10" method gives kids more self-assurance and speeds up calculations.