Curated OER
Houghton Mifflin: Addition and Subtraction
Addition and subtraction are covered here, with definitions, tips & tricks, lesson plans, and a section covering typical student questions.
Curated OER
Houghton Mifflin: Addition and Subtraction
Addition and subtraction are covered here, with definitions, tips & tricks, lesson plans, and a section covering typical student questions.
Curated OER
Houghton Mifflin: Addition and Subtraction
Addition and subtraction are covered here, with definitions, tips & tricks, lesson plans, and a section covering typical student questions.
Curated OER
Houghton Mifflin: Addition and Subtraction
Addition and subtraction are covered here, with definitions, tips & tricks, lesson plans, and a section covering typical student questions.
Curated OER
Houghton Mifflin: Addition and Subtraction
Addition and subtraction are covered here, with definitions, tips & tricks, lesson plans, and a section covering typical student questions.
Texas A&M University
Wtamu Virtual Math Lab: College Algebra: Adding & Sub. Rational Expressions
Rational expressions have never been so easy! Use this site to learn how to add and subtract them with ease and confidence. And common denominators? No Problem! Great practice problems are included to see how much you've learned.
National Council of Teachers of Mathematics
The Math Forum: K 12 Math Problems, Puzzles, Tips & Tricks
At this site us these tips & tricks to help students become better mental mathematicians.
Other
Mathpower: Elementary Algebra Assignments
Test your algebra aptitude at this colorful website filled with algebra assignments for upper elementary and middle school students. Assignments explore algebra concepts using addition, subtraction, multiplication, fractions, division,...
Shmoop University
Shmoop: Fractions & Decimals: Adding & Subtracting Decimals
The mathematics notes investigate how to add and subtract decimals. Examples and practice problems with solutions are included.
Purple Math
Purplemath: Adding & Subtracting Rational Expressions: Introduction
Finding common denominators is no problem with Purplemath. Use this lesson to learn how to add and subtract rational expressions with these great examples.
DLTK
Kidzone: Math Worksheets
This site provides printable worksheets for basic math operations. Organized by grade level, concept & theme.
ArtsNow
Arts Now Learning: What Is the Story of the Word Problem? [Pdf]
This lesson will assist students in visualizing and solving situations presented in word problems.
Other
Teachers on the Web: A Maths Dictionary for Kids
On this site from Aussie School House Teachers on the Web, an Australian K-6 teacher defines and illustrates more than 500 mathematical terms. It is a wonderful dictionary featuring clear and often interactive graphics, great colors, and...
Learning Wave Communications
Learning Wave: Decimals
This resource contains several links that lead to discussions on several topics of decimals, including converting and comparing with fractions, rounding, estimating, and basic operations. Each page includes examples and some sample...
Math Cats
Math Cat: Fact Family Card
Everything you need to know about fact families can be found here. Discover what fact families are and learn different strategies for using them. Links included to print your own fact family cards, create a fact family house, and play a...