This site gives many different summation formulas and their expansions. Very Comprehensive site
Provides teaching tips, information on common errors, differentiated instruction, enrichment, and problem solving for teachers to use with the CK-12 Middle School Math - Grade 6, Student Edition.
A work in progress, CK-12's Math 7 explores foundational math concepts that will prepare students for Algebra and more advanced subjects. Material includes decimals, fractions, exponents, integers, percents, inequalities, and some basic geometry.
In this lesson on rational numbers, students will learn how to solve real-life problems involving rational numbers.
In this interactive, students add and subtract plays on a football field to practice working with negative and positive integers on the number line. Each set of randomized drives consists of seven to nine plays and ends with a touchdown. Plays are represented with equations. When students place the football at the correct point for each play, the answer to the corresponding equation is automatically filled in. The accompanying activity suggests ways that teachers can integrate the interactive into the classroom setting.
This lesson discusses how to identify sets of numbers as natural numbers, whole numbers, integers, rational numbers, irrational numbers, and real numbers.
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
Gain an understanding of absolute value by viewing examples and a video lesson. [0:58]
Gain an understanding of how to add and subtract integers by viewing examples and a video lesson. [0:56]
This site explores the different types of numbers: natural numbers, whole numbers, integers, and rational and irrational numbers. Content includes some practice questions.
Do you need practice learning and remembering algebra vocabulary terms? This concentration game is the web site for you! There is a link to a list of terms with definitions you can click if you want to see if you are correct.
This video walks you through the four main steps when multiplying fractions with whole numbers. Includes explanations, examples and practice problems. [1:00]
Numbers can be categorized more specifically into different number systems, for instances, natural numbers, whole numbers, integers, rational numbers, and irrational numbers. In this video, you will learn how to classify numbers into different number systems. [3:47]
Find a quick, concise explanation of integers. A helpful diagram is given and clearly explained that shows the relationship of integers to other number groups.
Find a quick, concise explanation of how to multiply and divide with negative numbers. An example is given and clearly explained for each.
Find a quick, concise explanation of how to multiply a fraction times an integer. An example is given and clearly explained.
Find a quick, concise explanation of Real Numbers. Other number systems are also defined such as: Natural, Integer, Rational, Irrational and Complex Numbers.
This WebMathsite provides an interactive number line "solver." Content includes helpful hint and a full explanation of the mathematical solution.
This site gives an overview of rational numbers, gives interesting facts about the rational numbers including countability and probability of a rational numbers denominator being even. The site also contains related links.