National Council of Teachers of Mathematics
The Math Forum: Math Topics: Topology: Knot Theory
An extensive collection of sites on the topic of Knot Theory. Links to dozens of sites are provided which take the user from the basic definition of KT, through to detailed Applet programs which create knots on the spot. NOTE: Some links...
NASA
Ltp: 9th Grade Math Practice Questions
This site offers 38 practice math problems based on the Ohio 9th Grade Math Proficiency Test. Questions are multiple choice and answer pages include discussion.
Math Slice
Basic Math: Subtraction
This resource covers basic addition where students can choose a range of numbers including negatives or even decimals. After selecting parameters students are timed completing ten problems with instant feedback and an opportunity to...
Math Slice
Basic Math: Division
This resource covers basic division where students can choose a range of numbers including negatives or even decimals. After selecting parameters students are timed completing ten problems with instant feedback and an opportunity to...
Ducksters
Ducksters: Kids Math: Basic Laws of Math
The basic laws of math including the commutative, associative, and distributive laws are discussed on this site.
Ducksters
Ducksters: Kids Math: Multiplication Basics
Kids learn about the basics of multiplication including times tables, zero and one rules, and order on this site.
Paul Dawkins
Paul's Online Notes: Complex Numbers Primer
This tutorial reviews complex numbers, notation associated with complex numbers, and the basic operations involving complex numbers. Topics examined are conjugates and moduli, polar form, exponential form, arithmetic of complex numbers,...
AAA Math
Aaa Math: Adding Three Digit Numbers
Read through this explanation of how to add three digit numbers. Use the online game to practice this skill. The game will keep running totals of your correct and incorrect answers. It will also show you a percent score of the correct...
Other
Dans Math: Lessons: Calculus (Part 1)
College professor Dan Bach reviews the basic calculus concepts of limits and derivatives. The site includes examples and animated graphs.
Purple Math
Purplemath: Basic Trigonometric Ratios: Examples
Demonstrates how to use trig ratios to do simple solving of triangles.
Math Slice
Basic Math: Multiplication
This resource covers basic multiplication where students can choose a range of numbers including negatives or even decimals. After selecting parameters students are timed completing ten problems with instant feedback and an opportunity...
Math Slice
Basic Math: Rounding
This resource covers whole number rounding where students can choose to round to the nearest tens to millions. After selecting parameters students are timed completing ten problems with instant feedback and an opportunity to practice again.
Math Slice
Basic Math: Number Pattern
This resource covers number patterns where students can choose a range of numbers and the type of pattern they would like to practice. After selecting parameters students are timed completing ten problems with instant feedback and an...
Purple Math
Purplemath: Conics: Hyperbolas
A three-part tutorial that discusses the basic terms, definitions, and formulas related to hyperbolas.
Purple Math
Purplemath: Sequences and Series: Terminology and Notation
Explains the basic terminology and notation of sequences and series, including summation symbols, subscripts, and indices.
Khan Academy
Khan Academy: Model With Function Combination
Given two basic functions that model a real-world situation, combine them using the appropriate arithmetic operation in order to model a more complex situation. Students receive immediate feedback and have the opportunity to try...
Alabama Learning Exchange
Alex: Pass It Down
This lesson, Pass It Down, integrates science and math into two consecutive hands-on genetics activities that should be embedded within an existing genetics unit suitable for biology students. The results of each activity will be...
Alabama Learning Exchange
Alex: Battle to the Death: Adding Integers
The goal of this lesson is for students to use manipulatives to add integers, creating concepts rather than memorizing rules. This lesson will be related to the 300 Spartans who battled the invading Persians at the Battle of Thermopylae,...
Better Lesson
Better Lesson: Criteria for Success: Story Problem
Students learn the basics of "Modeling with Mathematics" (CCSS.MP.4) as they practice putting their thinking on paper in this beginning of year lesson. This lesson includes a video tutorial, differentiated worksheets based on skill...
McGraw Hill
Glencoe: Self Check Quizzes 1 Making Predictions
Use Glencoe's randomly generated self-checking quiz to test your knowledge of making predictions using surveys. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the...
Paul Dawkins
Paul's Online Notes: Trig Functions
In this section we will give a quick review of trig functions. We will cover the basic notation, relationship between the trig functions, the right triangle definition of the trig functions. We will also cover evaluation of trig...
Paul Dawkins
Paul's Online Notes: Exponential Functions Practice Problems
In this section we will discuss exponential functions. We will cover the basic definition of an exponential function, the natural exponential function, i.e. e^x, as well as the properties and graphs of exponential functions
PBS
Pbs: The Lowdown: Living Wages in Ca: Ratio and Rate in the Real World
In this KQED infographic, find out how much an adult in different-sized households needs to make to pay for basic monthly living expenses. In the accompanying classroom activity, students solve real-life problems involving rate and ratio...
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