Curated OER
Math Prefixes
Students use a dictionary to gather appropriate information for writing simple definitions. They recognize prefixes that relate to numbers, such as mono-, bi-, and tri-. Pupils use their creative abilities to extrapolate new words to...
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...
McGraw Hill
Glencoe: Self Check Quizzes 3 the Real Number System
Use Glencoe's Math Course 3 randomly generated self-checking quiz to test your knowledge of the Real Number System. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the...
Washington State University
Washington State University: Sets & Other Basic Concepts
Washington State University provides an introduction to sets and subsets and the symbols used to represent them.
Texas Instruments
Texas Instruments: Number Sets
When you start this activity, students receive a Venn diagram of real number sets (natural, whole, integer, rational, irrational)on their calculator. This same diagram is projected on the Activity Center screen at the front of the room....
Texas A&M University
Wtamu Virtual Math Lab: Intermediate Algebra: Properties of Real Numbers
After finishing this tutorial, you'll be well versed in various properties of real numbers: identity and inverse properties, commutative and associative properties, and distributive properties. You'll also know about the various symbols...
Other
Webquest: A Creative Encounter of the Numerical Kind
Students research the history behind number systems and create their own systems in the role of a mathematics expert sent to help an imaginary society. A fun way to learn the importance of number systems.
Alabama Learning Exchange
Alex: The Real Number System
This instructional activity 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...
National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: Los Numerous Reales
In this module you will learn about rational and irrational numbers.
McGraw Hill
Glencoe Mathematics: Online Study Tools: The Real Number System
This site gives a short interactive quiz which allows students to self-assess their understanding of the real number system.
Mangahigh
Mangahigh: Number: Leave Answers as Radicals
This site provides students practice with the concept of radicals. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to practice the skill.
CK-12 Foundation
Ck 12: Analysis: Imaginary Numbers
[Free Registration/Login may be required to access all resource tools.] In this lesson students will identify imaginary and complex numbers, basic evaluation of imaginary numbers. Students examine guided notes, review guided practice,...
CK-12 Foundation
Ck 12: Arithmetic: Comparison of Integers With Absolute Value
[Free Registration/Login may be required to access all resource tools.] Compare and order integers by using a number line and inequality symbols
CK-12 Foundation
Ck 12: Arithmetic: Sums of Integers With the Same Sign
[Free Registration/Login may be required to access all resource tools.] In this lesson students find the sum of integers with the same sign. Students examine guided notes, review guided practice, watch instructional videos and attempt...
CK-12 Foundation
Ck 12: Arithmetic:
[Free Registration/Login may be required to access all resource tools.] Learn how to add integers.
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.
Help Algebra
Help algebra.com: The Real Number System
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.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Number Systems
Find a quick, concise explanation of Real Numbers. Other number systems are also defined such as: Natural, Integer, Rational, Irrational and Complex Numbers.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Some Properties of Real Numbers
Eighteen problems cover a variety of topics using some of the properties of real numbers. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution"...
Houghton Mifflin Harcourt
Holt, Rinehart and Winston: Homework Help Independent Practice: Real Numbers
Get independent practice working with real numbers. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
Oswego City School District
Regents Exam Prep Center: Properties of Real Numbers
This chart gives the definition of each Real Number Property with an example excellent for reference or review. Site by Oswego City School District.
Alabama Learning Exchange
Alex: Rational or Irrational? That Is the Question
Students will participate in an activity that will help them obtain a feeling of how numbers are related to each other. They will determine whether a number is rational or irrational. Students will also be able to order rational and...
Lawrence Hall of Science
The Math Page: Topics in Pre Calculus: Rational and Irrational Numbers
Here is a site that clearly and thoroughly explains rational and irrational numbers as subsets of the real number system. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point...
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.