Activity
Lawrence Hall of Science

The Math Page: Skill in Algebra: Algebraic Expressions

For Students 7th - 9th Standards
Here is a site that clearly and thoroughly explains many topics related to algebraic expressions. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to...
Activity
Lawrence Hall of Science

The Math Page: Skill in Arithmetic: The Meaning of Multiplication: Mental Calculation

For Students 3rd - 8th Standards
If you are looking for a website that explains and defines the basics of mental multiplication with helpful hints then you have arrived at an excellent resource. There are even practice problems at the very end of the lesson.
Unknown Type
Khan Academy

Khan Academy: Multiplying Decimals 3 (Standard Algorithm)

For Students 6th - 8th Standards
In this exercise, students practice multiplying decimals 3. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Interactive
Fun Brain

Fun Brain: Tic Tac Toe Squares (Math Facts Games)

For Students 5th - 8th Standards
Players practice adding, subtracting, multiplying, and dividing skills while playing virtual Tic Tac Toe. They can also try their hand at squares, cubes, and square roots.
Activity
Other

Basket Math Interactive

For Students 9th - 10th Standards
Explore more than twenty math concepts such a perimeter, rounding, exponents, decimals, sign numbers, and more using this interactive basketball game. A Spanish version is also offered. Students results are tabulated daily.
Handout
Math Medics

S.o.s. Math: A Multiplication Table

For Students 9th - 10th Standards
A list of multiplication facts 1-20.
Unknown Type
Khan Academy

Khan Academy: Negative Number Addition and Subtraction: Word Problems

For Students 7th Standards
Negative number addition and subtraction: word problems
Unknown Type
Khan Academy

Khan Academy: Interpreting Negative Number Statements

For Students 7th Standards
Practice problems interpreting negative number statements.
Unknown Type
Math Warehouse

Math Warehouse: Add and Subtract Integers Worksheet [Pdf]

For Teachers 3rd - 8th Standards
Worksheet contains problems through which students can practice adding and subtracting integers. Real-world application of the skill is provided as well as a quick, diagnostic pre-test.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Comparison of Problem Solving Models

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Use the strategies of making a table and looking for a pattern to solve problems.
Lesson Plan
Better Lesson

Better Lesson: Order of Operations Pretest

For Teachers 6th - 7th Standards
Students show what they know about number characteristics and order of operations.
Lesson Plan
Shodor Education Foundation

Shodor Interactivate: Modular Arithmetic

For Teachers 9th - 10th Standards
Introduces students to modular (clock) arithmetic and its uses in real world problem-solving.
Handout
Quia

Ixl Learning: Writing Algebraic Expressions

For Students 6th - 7th Standards
Brush up on your math skills relating to writing algebraic expressions then try some practice problems to test your understanding.
Lesson Plan
PBS

Pbs Learning Media: Everyday Algebra: Targeted Math Instruction

For Teachers 9th - 10th Standards
This Algebra lesson focuses on writing algebraic expressions to represent real-world problems, using the properties of numbers to simplify expressions, and evaluating equations by isolating the variable.
Activity
AAA Math

Aaa Math: Inverse Relationship: Multiplication & Division

For Students 3rd - 8th Standards
This site explains the inverse relationship of division with multiplication. Gives problems and games to practice this skill in a fun and helpful way.
Activity
AAA Math

Aaa Math: Long Division: Dividing a 4 Digit by 2 Digit Numbers

For Students 3rd - 8th Standards
This site explains how to divide whole numbers, then offers problems and games to practice this skill.
Lesson Plan
George Mason University

Lesson Plans: Whole Number Algorithms Base Ten Blocks

For Teachers 3rd - 8th Standards
Brief lesson plans that show how to use base ten blocks to do all four operations and a little bit of algebra.
Unknown Type
Math.com

Math.com: The Language of Algebra Unit Quiz

For Students 6th - 8th Standards
The algebra unit quiz consists of eight true or false questions. Solutions are provided.
Activity
Harvey Mudd College

Mudd Math Fun Facts: Pascal's Triangle

For Students 3rd - 8th Standards
This tutorial defines and and demonstrates Pascal's triangle.
Activity
Harvey Mudd College

Mudd Math Fun Facts: Magic Squares, Indeed!

For Students 6th - 8th Standards
This tutorial provides a definition and examples of a "magic square" and then shows a proof and generalizations.
Activity
Harvey Mudd College

Mudd Math Fun Facts: Difference of Squares

For Students 9th - 10th Standards
Using algebra, learn how to do fast math in your head!
Activity
Harvey Mudd College

Mudd Math Fun Facts: Squares Ending in 5

For Students 3rd - 8th Standards
This math tutorial features an exercise in which you are given any two-digit number that ends in 5 and then square it in your head.
Activity
NumberNut

Number Nut: Operations a Distinct Process

For Students 3rd - 8th Standards
Sharpen your computation and problem solving skills with this lesson that focuses on order of operations. Related vocabulary and detailed examples also provided.
Activity
Math Is Fun

Math Is Fun: Long Multiplication

For Students 3rd - 8th Standards
Learn how to two- and three-digit numbers together by viewing two animated examples, and practice for yourself using the Long Multiplication Worksheets linked to at the bottom of the page.