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Activity
CK-12 Foundation

Ck 12: Real Numbers: Adding Electrons

For Students 6th - 8th
[Free Registration/Login Required] Students explore real numbers through electrons and protons. Click challenge me to answer practice questions and click learn more to complete a learning module on real numbers.
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Unknown Type
Common Core Sheets

Common Core Sheets: Comparing Numbers

For Teachers K - 1st Standards
Create a worksheet to assess students knowledge of comparing numbers.
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Unknown Type
McGraw Hill

Glencoe: Self Check Quizzes 3 Add and Subtract Fractions With Unlike Denominator

For Students 9th - 10th
Use Glencoe's Math Course 3 randomly generated self-checking quiz to test your knowledge of adding and subtracting fractions with unlike denominators. Each question has a "Hint" link to help. Choose the correct answer for each problem....
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Unknown Type
McGraw Hill

Glencoe: Self Check Quizzes 3 Add and Subtract Fractions With Like Denominators

For Students 9th - 10th
Use Glencoe's Math Course 3 randomly generated self-checking quiz to test your knowledge of adding and subtracting fractions with like denominators. Each question has a "Hint" link to help. Choose the correct answer for each problem. At...
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Activity
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Definitions of Rational, Irrational

For Students 9th - 10th Standards
Math Forum definition and explanation of rational and irrational numbers, the definitions of mathematics is also addressed.
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Whiteboard
ClassFlow

Class Flow: Rational and Irrational Numbers

For Teachers 6th - 8th Standards
[Free Registration/Login Required] By the end of the lesson, students will classify numbers into number families to help understand how to distinguish the difference between rational and irrational numbers. Students will demonstrate this...
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Activity
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Rational / Irrational Numbers

For Students 9th - 10th Standards
Math Forum response providing methods to prove that between any two numbers there exist a rational and an irrational number.
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Graphic
Curated OER

Clip Art by Phillip Martin: Rational Numbers

For Students 3rd - 8th
A clipart illustration by Phillip Martin titled "Rational Numbers."
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Activity
Lawrence Hall of Science

The Math Page: Skill in Algebra: Radicals: Rationals & Irrationals

For Students 9th - 10th Standards
Here is a site that clearly and thoroughly explains many topics related to radicals. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to students who have...
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Unknown Type
Common Core Sheets

Common Core Sheets: The Number System 7.ns.1d Worksheets

For Teachers 7th
Print or create worksheets or flashcards to assess students' understanding of adding or subtracting rational numbers.
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Khan Academy

Khan Academy: Add & Subtract Rational Expressions

For Students 10th
Example: Subtract and simplify (a-2)/(a+2) - (a-3)/(a^2+4a+4).
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Unknown Type
Khan Academy

Khan Academy: Add & Subtract Rational Expressions: Like Denominators

For Students 10th
Example: Add and simplify 6/(2x^2-7) + (-3x-8)/(2x^2-7).
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Unknown Type
Khan Academy

Khan Academy: Add & Subtract Rational Expressions: Factored Denominators

For Students 10th
Example: Add and simplify x/(2x+1)(x-7) + 2x^2/(2x-3)(x-7).
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Unit Plan
CK-12 Foundation

Ck 12: Arithmetic: Comparison of Fractions, Decimals, and Percents

For Students 8th
[Free Registration/Login may be required to access all resource tools.] Compare and order rational numbers
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Unknown Type
Education Place

Houghton Mifflin: Eduplace: Extra Practice Quiz Solve Equations W/rationals

For Students 3rd - 8th Standards
Practice solving equations with rational numbers in them. Read the interactive quiz rules and then click on the "Begin" ticket. If you answer incorrectly you get one more chance to try again then you are told the correct answer. See how...
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Unit Plan
Khan Academy

Khan Academy: Absolute Value to Find Distance

For Students 6th - 8th Standards
Practice taking the absolute value of the difference of two numbers to find the distance between those numbers. Apply this principle to solve word problems. Students receive immediate feedback and have the opportunity to try questions...
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Unit Plan
CK-12 Foundation

Ck 12: Arithmetic: Repeating Decimals

For Students 6th - 8th Standards
[Free Registration/Login may be required to access all resource tools.] In this lesson students write fractions and mixed numbers as repeating decimals. Students examine guided notes, review guided practice, watch instructional videos...
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Lesson Plan
Alabama Learning Exchange

Alex: Calm and Erratic!

For Teachers 9th - 10th Standards
During this lesson, students will learn why numbers are rational or irrational. Rational numbers are numbers that can be written in the form a/b. Irrational numbers cannot be expressed in the form a/b, where a and b are integers.
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Handout
Help Algebra

Help algebra.com: The Real Number System

For Students 9th - 10th Standards
Natural numbers, whole numbers, integers and rational numbers begin this lesson on the real number system. You can also learn more about the number line and absolute value. Examples and diagrams are included to enhance understanding.
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Unit Plan
PBS

Pbs Learning Media: Pearl Diver

For Students 6th - 8th
Play a fast-paced video game that involves finding rational numbers on the number line. This game from Math Snacks focuses on using what you know about positive and negative numbers and fractions to place them correctly on the variable...
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Unit Plan
PBS

Pbs: Building a Number Line

For Students 6th - 8th
Recall the definitions of four different sets of numbers. This interactive illustration focuses on displaying counting numbers, integers, rational numbers, and real numbers on a number line, providing the opportunity to visualize number...
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Activity
Texas Instruments

Texas Instruments: Comparing and Ordering

For Teachers 6th - 8th Standards
In this activity, students can use a number line to locate and compare rational numbers.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 7.ns, 7.ee Bookstore Account

For Teachers 7th
In this lesson plan, 7th graders add and subtract rational numbers to solve word problems.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 7.ns Distances on the Number Line 2

For Teachers 7th Standards
In this lesson, 7th graders add and subtract rational numbers on a number line.

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