Texas Instruments
Texas Instruments: The Tortoise and the Hare
In this activity, students develop patterns using two or more rational number quantities. They comprehend the concept of functions by understanding the relationship between these quantities and their sums.
Alabama Learning Exchange
Alex: The Real Number System
This lesson focuses on a clear understanding of the real number system by using a variety of teaching strategies. A graphic organizer on a slideshow illustrates how the classifications of numbers relate. A kinesthetic activity helps...
Common Core Sheets
Common Core Sheets: The Number System 8.ns.2 Worksheets
Print or create worksheets to assess students' understanding of radicals, square roots, and irrational numbers.
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]
CK-12 Foundation
Ck 12: Algebra: Number Lines Study Guide
This comprehensive study guide highlights the main terms and formulas needed to review number lines. Examples are included.
Khan Academy
Khan Academy: Addition & Subtraction: Find the Missing Value
Practice finding the missing value in an addition or subtraction equation involving negative numbers.
PBS
Pbs: Logical Leaps: Fractions and Decimals From 0 to 1 on the Vertical Number Line
In this interactive, use logic to solve riddles involving a flea-jumping contest. Place each contestant's jump, represented by either a fraction or a decimal in both feet and inches, at the correct point on the vertical number line....
PBS
Pbs: Logical Leaps: Graphing Inequalities: Fractions and Decimals From 0 to 1
In this interactive, use logic to solve three riddles involving high-jump performers in a flea circus. Then, using knowledge of inequalities, place the fleas in the appropriate range on a vertical number line. Numbers are randomized so...
University of Texas
Inside Mathematics: Decimals [Pdf]
This task challenges a student to use knowledge of place value system to represent and compare rational numbers.
Texas Education Agency
Texas Gateway: Selecting and Using Appropriate Operations to Solve Problems
Given problem situations involving rational numbers, the student will select and use appropriate methods to solve the problems.
PBS
Pbs Learning Media: Importance of the Origin
The CyberSquad tries to rescue the Cyberchase Council, which is being held captive by Hacker in this video segment from Cyberchase.
Khan Academy
Khan Academy: Equations With Parentheses: Decimals & Fractions
Solve linear equations that contain expressions with parentheses and the coefficients are rational numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Positive and Negative Fraction and Decimal Comparison Grade 6
[Free Registration/Login may be required to access all resource tools.] Compare and order positive and negative fractions and decimals.
CK-12 Foundation
Ck 12: Arithmetic:
[Free Registration/Login may be required to access all resource tools.] Learn how to add integers.
Arcademics
Arcademics: Orbit Integers
Select the correct answer by adding integers to advance your spacecraft.
Arcademics
Arcademics: Integer Warp
Idenitfy the correct answer based upon the given integer multiplication problem.
Illustrative Mathematics
Illustrative Mathematics: 7.ee Who Is the Better Batter?
Seventh graders compare the batting averages of two baseball players in this lesson.
ClassFlow
Class Flow: Squares and Square Roots
[Free Registration/Login Required] Students complete multi-step computations using order of operations in situations involving combinations of rational numbers including whole number exponents and square roots of square numbers.
Cut the Knot
Cut the Knot!: Polygons: Formality and Intuition
This is a very interesting site about polygons. The site begins by distinguishing between shapes whose sides intersect and polygons whose sides do not overlap. After this short introduction, you will find information regarding area and...
Math Is Fun
Math Is Fun: Ordering Numbers
Learners investigate how to order numbers. The educational resource consists of notes about the concept, examples, and learning games.
CK-12 Foundation
Ck 12: Algebra: Irrational Square Roots
[Free Registration/Login may be required to access all resource tools.] Find approximate solutions to equations involving irrational numbers.
Government of Alberta
Learn Alberta: Math Interactives: Exploring Square Roots (Object Interactive)
Explore a set of perfect squares, as well as their square roots using this highly interactive math resource. In addition, students will get to look at estimates of the square roots of non-perfect squares. Printable activities, solutions,...
Wolfram Research
Wolfram Math World: I
The imaginary number (also called the imaginary unit) is defined as the square root of negative one. This site explains the rational for the existence of the imaginary number "i" and gives formulas involving "i" including Euler's...
Wikimedia
Wikipedia: Irrational Number
At this site from Wikipedia you can learn the definition of an irrational number, then look at examples and explanations of why some numbers are irrational and others are not.
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