Shodor Education Foundation
Shodor Interactivate: Area (Elementary)
In this lesson students will practice finding the area of rectangular shapes and irregular shapes with right angles and understand why the area formula works for rectangular shapes. CCSS.Math.Content.3.MD.C.5.b A plane figure which can...
National Council of Teachers of Mathematics
The Math Forum: Geoboard Activities
Math Forum provides a set of links to sites that are related to geoboard activities. There are several great links to lessons using geoboards. The links provide insight into how to use them, including how to perform various measurements...
Khan Academy
Khan Academy: Find Perimeter When Given Side Lengths
Find perimeter of figures when given an image or context. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints. CCSS.Math.Content.3.MD.D.8 Solve real world and...
Illustrative Mathematics
Illustrative Mathematics: 6.ns Multiples and Common Multiples
This task asks students to apply the concepts of multiples and common multiples in an abstract context. Aligns with 6.NS.B.4.
Scholastic
Scholastic Lesson Plan: New Way to Measure Area
This article describes a new approach to teaching children more than just memorizing a formula to find area and hope they don't confuse it with perimeter. This approach involves a project with real life situations....
Other
Lumos Learning: Parcc Sample Questions & Practice Tests for Grades 3 8
This site provides free PARCC questions and practice tests for Math and ELA that are aligned with Common Core.
Texas A&M University
Wtamu Virtual Math Lab: College Algebra: Rational Exponents
In this tutorial, you will learn what a rational exponent is and how to complete many tasks involving them. Follow step-by-step instructions and examples, view video explanations, and hone your skills with several practice problems.
Texas A&M University
Wtamu Virtual Math Lab: Intermediate Algebra: Rational Exponents
An online tutorial which teaches you how to rewrite a rational exponent in radical notation, simplify an expression that contains a rational exponent, and use rational exponents to simplify a radical expression. Works through example...
Texas A&M University
Wtamu Virtual Math Lab: College Algebra: Complex Numbers
Use this tutorial to learn what imaginary and complex numbers are, how to write them, and how to perform operations with them. Offers step-by-step examples, video explanations of the examples, and practice questions with answers.
Oswego City School District
Regents Exam Prep Center: Add and Subtract Rational (Fractional) Expressions
Add and subtract rational expressions like a pro after you use this site. Finding common denominators is made easy with this tutorial. Try the example problems to test your knowledge, then check the solutions. The 'Topic Index' page...
Other
Conversions for Weight Measurements
This site allows you to convert weight/mass measurements. For example converting tons to grams. CCSS.Math.Content.3.MD.A.2 Measure and estimate liquid volumes and masses of objects using standard units
Johan Claeys
Math Abundance: An Introduction to Complex Numbers
A complete explanation of complex numbers that includes lessons on adding, subtracting, multiplying, and dividing them, as well as more advanced topics.
Texas A&M University
Wtamu Virtual Math Lab: Beginning Agebra: Central Tendencies
A tutorial to understand the three central tendencies and how to find them, as well as the standard deviation of values. Offers a discussion and practice problems.
Doina Popovici
Math Play: Compare Decimals Math Racing Game
Race your way to the finish line with this math game where you compare decimal numbers to race ahead!
Doina Popovici
Math Play: Unit Rate Halloween Math Game
An online math game where students match unit rates in different forms.
Math Is Fun
Math Is Fun: Area of Triangles Without Right Angles
Learn how to find the area of triangles without right angles. Find the formula to use depending on the information you know about the triangle: base and height, three sides, or two sides and an angle.
Math Planet
Math Planet: Geometry: Transformation Using Matrices
Explains how simple polygons translate into matrices and how to use 2x2 matrices to represent transformations in a plane. Includes video demonstrating an example where a vector must be rotated 90 degrees using matrices. [4:18]
Wolfram Research
Wolfram Math World: Complex Conjugate
This site contains an explanation of complex conjugates. Then it goes on to list and display charts and formulas. Links are also provided for additional information.
National Council of Teachers of Mathematics
The Math Forum: Paper Folding Activity
This is a lesson plan of paper folding as a method of proof. A Java applet version of the activity can be accessed, giving the actual lengths and angle sizes.
Other
Brown Math: How to Convert Units of Measurement
This site has a detailed step-by-step instruction of how to convert units of measurement. Multiplying by 1 is explained as are compound units, and finding conversion factors. The discussion is slowed down for students who may have missed...
University of Georgia
University of Georgia: Inter Math: Box and Whisker Plot
Description of box-and-whisker plots and their uses, along with a visual representation. There are links to related terms, everyday examples, more information, and the interactive checkpoint involving box and whisker plots located in the...
Intel Corporation
Intel: Fractions Made Visual
Students learn the importance of math accuracy and, more specifically, that knowing how to add, subtract, multiply, and divide fractions make life easier for everyone. To help students come to this understanding, they are assigned to a...
Oswego City School District
Regents Exam Prep Center: Linear Quadratic Systems
Resources to use when planning instruction on linear-quadratic systems. Find lessons on solving systems algebraically and graphically, a practice quiz with solutions, and a worksheet through which students investigate and solve systems.
Oswego City School District
Regents Exam Prep Center: Law of Sines and Law of Cosines
This tutorial examines the law of sines and the law of cosines. Includes class notes, examples, and a variety of practice problems with solutions. The teacher resource consists of a lab that utilizes the law of sines and the law of cosines.
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