Understanding the inverse relationship between addition and subtraction is essential for developing fluency in young mathematicians. Zoe and RJ explain how three numbers can form fact families that make two addition and two subtraction...

Elementary schoolers review their knowledge of addition and subtraction through studying fact families. They use cubes to help them add or subtract. Students answer the teachers question with addition and subtraction fact answers.

First graders review number facts to illustrate the relationship between addition and subtraction. In this inverse relationship lesson, 1st graders write an addition sentence and then invert the numbers to show the subtraction fact.

Students multiply by one-digit whole numbers.

Second graders explore the inverse relationship of addition and subtraction in a "hands-on" activity based on the fact families of ones, twos and threes.

Second graders explore related multiplication and division facts. They study the inverse relationship of multiplication and division and engage in a group discussion about families. They complete a web-based lesson which is imbedded in...

Pupils solve basic multiplication or addition facts using a calculator and product cards. They draw a card, read the sum or product, and press single digits on the calculator to display the number on the card.

Students explore regrouping. For this hands-on math place value lesson, students construct models using connecting cubes and place value mats to solve simple addition problems that require regrouping.

Students play a team subtraction game, subtracting two-digit numbers and using addition to check their subtraction. They solve subtraction problems at the board while the team solves the same problem in their seats.

Students solve problems involving electric charges and force. For this physics lesson, student solve word problems using addition and subtraction of vectors. They identify the direction represented by a vector as it relates to an...

Students explore fact families. For this math lesson, students use links to model a fact family. Students solve addition and subtraction problems.

Students participate in playing online games. In this practice instructional activity, students play online games to practice skills learned throughout the week.

Students subtract integers using counters. In this algebra lesson, students solve linear equations using an online tool. They use subtraction to isolate the variable.

Third graders use pennies as manipulatives to solve simple division problems. They create division number sentences to correspond with each exercise. This is a good, hands-on way to teach the concept of division.

Second graders practice the multiples of three as an introduction to multiplying by three.

Third graders explore the process of place value and subtraction through regrouping and borrowing exercises. Several activities using manipulatives are utilized in the activity.

Students listen to story Five Little Monkeys Jumping On The Bed, and act out subtraction situations.