University of Regina (Canada)
University of Regina: Math Central: Rational Numbers Lesson
This hands-on lesson discusses and explores rational numbers. Students construct personal fractional strip kits and use them to compare fractional amounts and investigate equivalence. The lesson plan includes instructions, materials, and...
CK-12 Foundation
Ck 12: Rational Numbers in Applications
[Free Registration/Login Required] Students are given real world word problems to explore adding and subtracting rational numbers. Click challenge me to answer a practice question and click learn more to watch a video.
Sophia Learning
Sophia: Representing Rational Numbers Using Variables: Lesson 2
This lesson demonstrates how to represent rational numbers using variables. It is 2 of 9 in the series titled "Representing Rational Numbers Using Variables."
CK-12 Foundation
Ck 12: Algebra: Properties of Rational Numbers
[Free Registration/Login may be required to access all resource tools.] Recognize and identify irrational numbers and the set of real numbers
Khan Academy
Khan Academy: Comparing, Order Rational Numbers
Practice comparing decimals, percents, fractions, and mixed numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Free Math Help
Free Math Help: Algebra Lesson: Rational Numbers
Learners examine the set of real numbers. The resource includes detailed explanations about rational and irrational numbers. It provides example problems.
Math Is Fun
Math Is Fun: The Evolution of Numbers
Discusses what numbers are and how our understanding of them has evolved over thousands of years, from simple counting to negative numbers and irrational numbers, for example. Includes a set of practice questions where students identify...
Cuemath
Cuemath: Real Numbers
A comprehensive guide for learning all about real numbers and their important properties with solved examples and practice questions.
Houghton Mifflin Harcourt
Holt, Rinehart and Winston: Homework Help Independent Practice: Add and Subtract Rational Numbers 2
Get independent practice adding and subtracting fractions with unlike denominators. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
Khan Academy
Khan Academy: Adding & Subtracting Rational Numbers
Practice adding and subtracting negative fractions, decimals, and percents.
PBS
Pbs: The Number Line: Rational Numbers and Football
In this interactive, students add and subtract plays on a football field to practice working with negative and positive integers on the number line. Each set of randomized drives consists of seven to nine plays and ends with a touchdown....
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Rational Numbers
Find a quick, concise explanation of rational numbers. Examples are given and clearly explained.
Illustrative Mathematics
Illustrative Mathematics: N Rn Sums of Rational and Irrational Numbers
The goal of this task is to examine sums and products of rational and irrational numbers. One important property of rational numbers is that their decimals always terminate or repeat: using a slightly different formulation, a rational...
PBS
Pbs: Logical Leaps: Graphing Inequalities: Fractions, Mixed Numbers, and Decimals
In this interactive, use logic to solve three riddles involving a jumping frog competition. Then, using knowledge of inequalities and rational numbers, place the frogs in the correct range from 0 to 5 on a number line. The fractions,...
Other
Math Only Math: Subtraction of Rational Numbers
Discusses how to subtract rational numbers through detailed explanations of the steps for solving six problems.
Illustrative Mathematics
Illustrative Mathematics: 8.ns Converting Decimal Rational Numbers to Fractions
Eighth graders are presented with three repeating decimal numbers and must convert them to fraction format. Aligns with 8.NS.A.1.
Other
Interactive Real Analysis: Natural Numbers, Integers, Rationals
A rigorous definition of natural numbers, integers, and rationals numbers, using advanced mathematics language. Contains links to proofs.
Sophia Learning
Sophia: Dividing Rational Numbers
Explore the term reciprocal (multiplicative inverse) when dividing rational numbers and take a quiz to assess learning.
Khan Academy
Khan Academy: Classify Numbers
Practice classifying numbers as whole, integer, rational, and irrational. Students receive immediate feedback and have the opportunity to try questions repeatedly, to watch a video, or ask for a hint.
Cuemath
Cuemath: Irrational Numbers
Learn how to identify irrational numbers. This lesson reviews the irrational number list, the difference between irrational and rational numbers, and whether or not irrational numbers are real numbers. Examples are provided along with a...
CK-12 Foundation
Ck 12: 2.5 Simple Rational Models
This section draws on previous sections that explored how to add, subtract, multiply, and divide rational numbers in order to solve real-world problems involving rational equations. It explores how to apply these procedures in order to...
Varsity Tutors
Varsity Tutors: Hotmath: Graphing Calculator Practice Problems Rational Numbers
Practice using your graphing calculator for rational number problems, including decimal and fraction operations. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly...
PBS
Pbs Learning Media: Logical Leaps: Rational Numbers on the Number Line
In this interactive, use logic to solve riddles involving a wallaby jumping contest.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Counting Rationals and Integer
Math Forum response providing a proof that there are as many rational numbers as integers.
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