National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Using Interval Notation to Express Answers
"Dr. Math" responds to a student question about solving an inequality involving a variable in the denominator.
Math Is Fun
Math Is Fun: Compare Numbers to 10
A simple game through which young learners practice using the equal, less then, and greater than signs. Uses whole numbers through 10.
Math Is Fun
Math Is Fun: Compare Numbers to 100
Students play a game to practice comparing numbers using the equal, less than, and greater than signs. Work against a timer, and earn points.
Oswego City School District
Regents Exam Prep Center: Linear Inequalities
A complete review of linear inequalities interval notation, and compound inequalities. Several applications of the compound inequalities are given along with solutions and explanations. Links to sites assisting with graphing calculator...
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...
Purple Math
Purplemath: Introduction to Negative Numbers
This lesson from Purplemath.com reviews negative numbers and their operations. Number lines are used for demonstration.
Visual Fractions
Visual Fractions: Rename in Higher Terms With Lines
Rename fractions in higher terms with this interactive module. Number lines are used for fractional representations. Detailed instructions, practice opportunity, and immediate feedback provided for this concept....
Khan Academy
Khan Academy: Add and Subtract on the Number Line Word Problems
Practice adding and subtracting using the number line. Numbers used are 100 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Fun Brain
Fun Brain: Line Jumper (Number Line Game)
Practice adding and subtracting positive and negative numbers by using a number line. Five levels of difficulty--easy, medium, hard, really hard, and super brain--to test your skills.
Math Aids
Math Aids: Number Line Worksheets
Great resource for learning and practicing number lines. Math worksheets are printable, may be customized, and include answer keys.
Other
T. Smith Publishing: A Printable Number Line Worksheet [Pdf]
A very basic learning exercise on number lines; printable for student's use. Requires Adobe Reader.