Help Algebra
Help algebra.com: Addition & Subtraction of Real Numbers
Using a number line, the technique for adding and subtracting real numbers is demonstrated. Notation and calculator use is also touched on at the end of the lesson.
CK-12 Foundation
Ck 12: Positive and Negative Fraction and Decimal Comparison Grade 7
[Free Registration/Login may be required to access all resource tools.] Compare and order decimals and fractions.
Scholastic
Scholastic: Study Jams! Math: Numbers: Integers
This site provides great practice on the concept of integers. Students can first learn about the topic by watching a step by step instruction video that also points out areas of concern. Finally, students can practice their knowledge by...
ClassFlow
Class Flow: Multiplication and Division of Positive and Negative Numbers
[Free Registration/Login Required] This flipchart outline multiplication and division rules for positive and negative numbers and gives examples and problems for students and teachers.
ClassFlow
Class Flow: Rational Numbers
[Free Registration/Login Required] Using a number line, the terms whole numbers, rational numbers and integers are defined positive and negative numbers are discussed.
Alabama Learning Exchange
Alex: Let's Go Fishing for Positive and Negative Integers
This lesson will actively engage students in a fishing tournament that uses ordered pairs to catch fish. As students begin to catch the hidden fish, they will find a relationship between the integers in the ordered pairs. By identifying...
Khan Academy
Khan Academy: Absolute Value of Complex Numbers
Given a complex number in the form a+bi, find its absolute value. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints. HSN.CN.B.4
New York Times
New York Times: Steven Strogatz on the Elements of Math Series the New York Times
[Free Registration/Login Required] On this site, Cornell University mathematics professor, Steven Strogatz, shares his 15-part series of columns on the elements of math. He investigates topics ranging from negative numbers to subtraction...
OER Commons
Oer Commons: The Effects of Positive & Negative Numbers
Seventh graders explore what happens to a hot air balloon when they add or remove units of weight or heat. This activity is an informal exploration of addition and subtraction with positive and negative integers.
Other
Cyber Sleuth Kids: Number Line Worksheets
Using a number line has just gotten a little easier for teachers and students in this site from CyberSleuth that contains an assortment of printable number line worksheets. Here you will find blank number lines, number lines with...
Khan Academy
Khan Academy: Practice: Adding Negative Numbers
Practice adding one-digit positive and negative numbers.
Khan Academy
Khan Academy: Dividing Negative Numbers Review
Summarizes the rules for dividing with negative numbers, along with examples, and presents three practice questions.
Khan Academy
Khan Academy: Multiplying Negative Numbers Review
Summarizes the rules for multiplying with negative numbers, along with examples, and presents three practice questions.
OnlineMathLearning.com
Online Math Learning: Multiplying and Dividing Positive & Negative Decimals
An interactive worksheet for practice in the multiplication and division of decimals with positive and negative signs.
OnlineMathLearning.com
Online Math Learning: Adding & Subtracting Positive & Negative Decimals
An interactive worksheet for practice in the addition and subtraction of decimals with positive and negative signs.
Mr. Martini's Classroom
Mr. Martini's Classroom: Negative Number Division Cards: Fill in the Blank
Students type the correct positive or negative number to complete the division problems on these interactive flashcards. The problem changes color when the correct number is typed.
Knowledge Share
Super Kids: Addition and Subtraction Worksheet Creator
Create your own addition/subtraction math facts worksheets. Use them in the classroom for practice or timed drills, or at home! Choose from two levels of difficulty, and vertical or horizontal equation format. You input minimum and...
Cool Math
Coolmath: Finding the Opposite of a Number
This prealgebra lesson gives you practice on finding opposite numbers.
Other
Mathsframe: Sequences
Students can solve number sequences and skip count with positive and negative whole numbers and decimals.
ClassFlow
Class Flow: Positive and Negative Numbers
[Free Registration/Login Required] This lesson is an early introduction to positive and negative numbers.
Wyzant
Wyzant: Simplifying Multiple Signs Worksheet
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.
Mr. Martini's Classroom
Mr. Martini's Classroom: Negative Number Multiplication Cards
Students multiply positive and negative numbers on these interactive flashcards. The problem changes color when the correct product is typed.
ClassFlow
Class Flow: Negative Numbers
[Free Registration/Login Required] In this flipchart students apply their knowledge of integers to combine positive and negative integers and locate their position on a number line.
Mr. Martini's Classroom
Mr. Martini's Classroom: Negative Number Subtraction Cards, Fill in the Blank
Students type the correct positive or negative number to complete the subtraction problems on these interactive flashcards. The problem changes color when the correct number is typed.