Many students cringe when they see a subtraction problem with multiple zeros. The “Subtract One” strategy in this lesson involves reducing the top number by one to turn the 0 digits into 9’s and then adding the one back in at the end.

In this lesson, your students will strengthen their basic fact fluency and determine whether or not number sentences are true. Engage your students by giving them worksheets at their level.

Number facts are related, just like families! Help students learn all about fact families while they make fact family trees!

In this lesson, students explore absolute value with and without a number line, compare the absolute values of two numbers, and apply their understanding of absolute value to real-world contexts.

Music, hands-on practice, and coloring by number will make this cool addition lesson a favorite! In this lesson, your students will practice adding numbers to five.

Teach your students to decompose factors as a strategy to find multiples of 6, 7, 8, and 9. This lesson supports flexible thinking and number sense.