Activity
Learning Wave Communications

Learning Wave: Adding Integers

For Students 6th - 8th Standards
Using several examples, this resource demonstrates how positive and negative numbers are added while applying them to real world situations.
Activity
Wyzant

Wyzant: Simplifying Multiple Signs Worksheet

For Students 9th - 10th Standards
Dealing with multiple positive and negative signs in an algebra equation can be a challenge for some students. This inter-active quiz from WyzAnt provides 20 multiple-sign equations and their answers for students to test their knowledge.
Unit Plan
PBS

Pbs: Additive Inverse

For Students 6th - 8th Standards
This animated Math Shorts video from the Utah Education Network explains the term additive inverse and provides several examples that demonstrate the concept. In the accompanying classroom activity, students create equations and solve...
Unit Plan
Khan Academy

Khan Academy: Practice: Adding Negative Numbers

For Students 5th - 6th Standards
Practice adding one-digit positive and negative numbers.
Interactive
Calculator Soup

Calculator Soup: Fractions Average Calculator

For Students 9th - 10th
This calculator finds the average of a set of fractions by adding all of the fractions and dividing by the number of fractions in the set. Enter positive or negative fractions, integers and mixed numbers and the calculator converts...