Other
Math Bugs Me: Add Subtract Integers
This website provides students tips on how to add integers using absolute value and by introducing them to a pattern.
Lawrence Hall of Science
The Math Page: Skill in Algebra: Signed Numbers
This resource explains positive and negative numbers. There are example problems solved, problems for the student to attempt, and answers to the student problems.
Library of Congress
Loc: The Empire That Was Russia, Photographic Record Recreated
The digital revival of the glass plate images of the Russian Empire on the eve of World War I by photographer Sergei Mikhaylovich Prokudin-Gorskii. Very interesting from both historical and technological points of view.
PBS
Pbs Learning Media: Cyberchase: Competing for the Northern Hemisphere Games
In this short Cyberchase video, students learn about positive and negative numbers as Harry tries to score a total of 50 points in various events to qualify for the Northern Hemisphere games in New Orleans. [3:24]
State Library-Florida
Florida Memory: Daguerreotype to Digital: Brief History of Photography
Online history of the photographic process arranged by type and time period.
Purple Math
Purplemath: "Number" Word Problems
Demonstrates, step-by-step and with illustrations, how to set up and solve 'number' problems.
Ducksters
Ducksters: Kids Math: Types of Numbers Glossary and Terms
Math glossary and terms on Types of Numbers for kids. Learn the definitions used in this mathematics subject such as whole numbers, real numbers, and integers.
Can Teach
Can Teach: Math Centers
This page offers a variety of math center ideas for general math and geometry. Instructions on setting up the center are not provided for most ideas, however, those lacking instructions are pretty self-evident.
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...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Reversing the Inequality Symbol
"Dr. Math" responds to a student inquiry of why it is necessary to reverse the inequality sign when multiplying/dividing by a negative value.
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