Students can practice solving subtraction equations through these interactive learning exercises. Three games are also available to challenge students' understanding of the skill.

Explains how to add exponents as well as other aspects of exponents including positive and negative exponents, rational exponents, zero exponents, power of power, and division of exponents. Includes practice problems with answers provided.

By now, students have learned that fact families include both addition and subtraction facts. They have also learned that by reversing the order of the addends, they can form related addition facts with the same sum. The students will...

This resource provides information about the altitude theorem for equilateral triangles, in addition to links on related topics. Requires Java.

Students take a quiz over the concept of integer opposites, also known as additive inverses. After answering each question they are given feedback. Hints are available but affect the score. If students are still struggling with the...

This interactive worksheet covers a wide range of math concepts such as Roman Numerals, distributive property, estimating sums, and comparing fractions and decimals. Some concepts may be slightly challenging. Learners can access the help...

Practice identifying equivalent expressions involving the addition and subtraction of negative numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Washington State University provides a short lesson concerning which operations to execute first in solving an equation. The site provides the answers with an example.

Sixth graders work with the concept of equality and balance to solve one and two-step algebraic equations.

This site provides worksheets covering the concept of finding opposites also know as additive inverses. There are ten worksheets and each has an answer key. All files are grouped together as a pdf file.

The sum of any number and its additive inverse is always a zero. This site gives you the rule for this property.

In this task, students investigate why total solar eclipses are rare. They will learn that, in addition to requiring the positioning of the Sun, Moon, and Earth, the Moon can only completely block out the Sun when it is closest to the...

Practice equivalent expressions with negative numbers and variables.

Explains what a zero matrix is, shows examples, and provides some interactive practice exercises. Help is available for exercises if it is needed. A summary chart compares the number zero to the zero matrix.

Students extend their understanding of surface tension by exploring the real-world engineering problem of deciding what makes a "good" soap bubble. Student teams first measure this property, and then use this measurement to determine the...