Lawrence Hall of Science
The Math Page: Skill in Algebra: Adding and Subtracting Signed Numbers
Here is a site that clearly and thoroughly explains how to add and subtract signed numbers. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to students who...
Lawrence Hall of Science
The Math Page: Skill in Algebra: Multiplying and Dividing Signed Numbers
Here is a site that clearly and thoroughly explains multiplying and dividing signed numbers. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to students who...
National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: Calculo Mental Todo Terreno
Practice your mental math with this application by finding the sum of two: whole numbers, integers, decimals or fractions. You can choose two different levels of difficulty.
Cool Math
Coolmath: Coolmath4kids: Orbit Integers
Add positive and negative numbers in this multiplayer space race!
Mathigon
Mathigon: Real, Irrational, Imaginary Numbers
Explore this course in imaginary and complex numbers including topics of integers, real numbers, infinity, transcendental numbers, imaginary and complex numbers.
Cool Math
Coolmath: Gauss's Problem and Arithmetic Series
This algebra lesson explains Gauss's Problem and introduces arithmetic series.
Saddleback College
Algebra2go: Introduction to Subtraction Problem Sets
This resource has three problem sets to practice subtraction. Select a problem set, then select a question. Fill in the blank with the correct answer for each problem. When you have answered all of the questions, ask Charlie how you did.
Organization for Community Networks
Ofcn Lesson Plan: Bean Toss
OFCN lesson to help students understand the concept of adding and subtracting positive and negative numbers.
Texas Instruments
Texas Instruments: Gaining or Loosing Yards in Football
This activity will allow students to use the football field as an interactive model for adding, subtracting, multiplying and dividing integers. Many students are familiar with the gain or lost of yards in the game of football, however...
CK-12 Foundation
Ck 12: Elem Math: Multiplication Involving Distance
[Free Registration/Login may be required to access all resource tools.] Students practice solving word problems that use multiplication to find the distance.
Math Open Reference
Math Open Reference: Number
Resource defines numbers into two main categories, counting numbers and scalars. It also gives examples of number notation.
Other
The Real Number System
The subsets of the real number system are organized in an easy-to-read table. Use the questions at the bottom of the page as an assignment to check for understanding.
Math Warehouse
Math Warehouse: Add and Subtract Integers Worksheet [Pdf]
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.
CK-12 Foundation
Ck 12: Arithmetic: Sums of Integers With Different Signs
[Free Registration/Login may be required to access all resource tools.] In this lesson students find the sum of integers with different signs. Students examine guided notes, review guided practice, watch instructional videos and attempt...
CK-12 Foundation
Ck 12: Arithmetic: Sums of Integers on a Number Line
[Free Registration/Login may be required to access all resource tools.] In this lesson students find sums of integers by using a number line. Students examine guided notes, review guided practice, watch instructional videos and attempt...
CK-12 Foundation
Ck 12: Arithmetic: Sums of Integers on a Number Line
[Free Registration/Login may be required to access all resource tools.] In this lesson students find sums of integers by using a number line. Students examine guided notes, review guided practice, watch instructional videos and attempt...
CK-12 Foundation
Ck 12: Algebra: Solving Real World Problems With Two Step Equations
[Free Registration/Login may be required to access all resource tools.] Use rational numbers and two-step algebraic equations to solve real-world problems. Includes examples, guided practice, a video [12:59], practice problems, and an...
CK-12 Foundation
Ck 12: Arithmetic: Opposites of Given Integers
[Free Registration/Login may be required to access all resource tools.] Find the opposites of given positive or negative integers.
CK-12 Foundation
Ck 12: Arithmetic: Integer Comparison on a Number Line
[Free Registration/Login may be required to access all resource tools.] Compare positive and negative integers and order them on a number line.
Other
Msjc: Lesson: The Opposite and the Reciprocal Assignment: The Opposite
Explore opposites and reciprocals through positive and negative numbers and fractions.
Better Lesson
Better Lesson: Show What You Know About Integers and Rational Numbers
What do students understand? What gaps do they have in their understanding?
Alabama Learning Exchange
Alex: What's the Difference? Subtracting Integers
In Cooperative/Collaborative groups, this lesson will actively engage students to subtract positive and negative integers. An "Essential Question" will be used to activate background knowledge and set the purpose for understanding...
Alabama Learning Exchange
Alex: How Low Can You Go?
In this lesson, students will identify and locate numberspostive and negative numbers, including decimals and fractions on a number line. This lesson plan was created by exemplary Alabama Math Teachers through the AMSTI project.