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Activity
Math Medics

S.o.s. Math: Algebra

For Students 9th - 10th Standards
This lesson provides basic instruction on the major concepts in algebra. Content includes a focus on fractions, units of conversion, complex numbers, quadratic equations, factorization and roots of polynomials, solving equations, systems...
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Whiteboard
ClassFlow

Class Flow: Irrational Numbers

For Teachers 9th - 10th Standards
[Free Registration/Login Required] Students are introduced to irrational numbers, and the application in various expressions.
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Unit Plan
Khan Academy

Khan Academy: Addition & Subtraction: Find the Missing Value

For Students 6th - 8th Standards
Practice finding the missing value in an addition or subtraction equation involving negative numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Sets and Symbols

For Students 8th
[Free Registration/Login may be required to access all resource tools.] Classify real numbers as rational numbers, whole numbers, integers, and irrational numbers.
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Unit Plan
CK-12 Foundation

Ck 12: Arithmetic: Conversion of Decimals, Fractions, and Percent

For Students 8th
[Free Registration/Login may be required to access all resource tools.] Understand, identify and find equivalent forms of rational numbers
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Interactive
Doina Popovici

Math Play: Rational and Irrational Numbers Game

For Students 7th - 9th Standards
An interactive game where students have to determine whether a number is a rational or a irrational number.
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Handout
University of St. Andrews (UK)

University of St. Andrews: Georg Ferdinand Cantor

For Students 9th - 10th
This site, which is provided for by the University of St. Andrews, gives information on the German mathematician Cantor.
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Whiteboard
ClassFlow

Class Flow: Rounding

For Teachers 9th - 10th Standards
[Free Registration/Login Required] In this flipchart, students apply estimation strategies to predict or determine the reasonableness of answers in situations involving computation on rational numbers in various forms including whole...
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Whiteboard
ClassFlow

Class Flow: Number Theory Order of Operations

For Teachers Pre-K - 1st Standards
[Free Registration/Login Required] This flipchart will help students understand the order of arithmetic operations with rational numbers. It includes exercises and assessment questions.
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Interactive
Doina Popovici

Math Play: 8th Grade Halloween Math Game

For Students 7th - 9th
An online game where students destroy spooky monsters by answering questions that have them writing rational numbers as decimals and decimals as fractions.
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Activity
University of Utah

University of Utah: The Number System

For Students 9th - 10th Standards
This site from The University of Utah provides a definition of commonly used numbers including rational numbers, natural numbers, integers, real and complex numbers and more.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 6.ns Comparing Temperatures

For Teachers 6th Standards
This task has students do computations with positive and negative numbers in the context of temperature. Aligns with 6.NS.C.7.b.
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Unit Plan
Khan Academy

Khan Academy: Compare and Order Absolute Values

For Students 5th - 7th Standards
Write an inequality to compare absolute values. Order numbers written in absolute value form from least to greatest. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
BBC

Bbc: Skillswilse: The Number Line

For Students 3rd - 8th Standards
This Skillswise site focuses on number lines. Included is a video about how to use number lines, fact sheets and worksheets for instruction, and quizzes on the information presented. Be aware that this is from Great Britain, so any games...
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: Using Operations and Parentheses

For Teachers 4th - 8th Standards
The purpose of this task is to give students a chance to work creatively with three of the four fundamental arithmetic operations (addition, subtraction, and multiplication). It is well suited for helping students develop fluency with...
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 6.ns Jumping Flea

For Teachers 6th Standards
In this task, 6th graders examine where numbers are on a number line in relation to zero and what we mean by absolute value. Aligns with 6.NS.C.7.
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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: Those Number Aren't Just Moody.

For Teachers 6th - 8th Standards
Rational numbers can sometimes cause problems when they're converted to repeating decimals. That, we can handle. But, what about those irrational numbers that can only be "sort of, like approximated"? How can we expect middle schoolers...
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Activity
Purple Math

Purplemath: Number Types

For Students 9th - 10th Standards
This site explores the different types of numbers: natural numbers, whole numbers, integers, and rational and irrational numbers. Content includes some practice questions.
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Unit Plan
Khan Academy

Khan Academy: Writing Fractions as Repeating Decimals

For Students 7th - 8th Standards
Practice writing fractions as repeating decimals. Get ready to bust out those long division skills! Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Solving Real World Problems With Two Step Equations

For Students 8th Standards
[Free Registration/Login may be required to access all resource tools.] Use rational numbers and two-step algebraic equations to solve real-world problems. Includes examples, guided practice, a video [12:59], practice problems, and an...
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Lesson Plan
Oswego City School District

Regents Exam Prep Center: Irrational Approximations

For Teachers 6th - 8th Standards
Providing one lesson, one practice exercise, and two teacher resources, the information at this website is geared toward students who already understand rational and irrational numbers. The lesson has explanations of what happens when a...
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: N rn.a.2: Checking a Calculation of a Decimal Exponent

For Teachers 9th - 10th Standards
The purpose of the task is to connect properties of fractional exponents with ordering of real numbers. Aligns with N-RN.A.2.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: N rn.a.1: Evaluating Exponential Expressions

For Teachers 9th - 10th Standards
The goal of this task is to use properties of exponents for whole numbers in order to explain how expressions with fractional exponents are defined. Aligns with the N-RN.A.1 standard.

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