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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.
Better Lesson
Better Lesson: Area and Perimeter Review Using Legos
Lesson plan in which students calculate area, build areas to a given amount, and calculate the perimeter with the use of Legos. Step by step instructions and videos are provided. CCSS.Math.Content.3.MD.C.7.c Use area models to represent...
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...
OnlineMathLearning.com
Online Math Learning: Factor Polynomials With Complex Roots
A collection of video lessons with example problems and solutions to help students learn how to extend polynomial identities to the complex numbers. Includes interactive widget for working on the modeled problems or trying your own.
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...
Oswego City School District
Regents Exam Prep Center: Similarity of Triangles
Discover the world of "similarity" in this test prep tutorial on similar triangles. Detailed explanation of concept with examples, challenging interactive practice, and a classroom activity that integrates math and science.
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.
OnlineMathLearning.com
Online Math Learning: Multiply a Vector by a Matrix
Examples, solutions, videos, and lessons to help students learn how to multiply a vector (regarded as a matrix with one column) by a matrix of suitable dimensions to produce another vector. Work with matrices as transformations of...
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]
Math Is Fun
Math Is Fun: The Law of Cosines
Students learn about the law of cosines. The tutorial consists of a definition, examples, and practice problems to check for comprehension.
Math Is Fun
Math Is Fun: The Law of Sines
Students learn about the law of sines. The tutorial consists of a definition, examples, and practice problems to check for comprehension.
Math Medics
S.o.s. Math: The Complex Plane
Contains a lesson and practice exercises about complex numbers in a complex plane.
Wolfram Research
Wolfram Math World: Math World: Dilation
This MathWorld site gives a visual description of dilation and the different kinds of dilation in a similarity transformation.
Wolfram Research
Wolfram Math World: Equilateral Triangle
MathWorld goes into detail about equilateral triangles at this site. Use this site to find out how to construct an equilateral triangle using a compass and straight edge. Learn about the altitude of such triangles, and the rationality of...
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...
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
Better Lesson
Better Lesson: Using Models to Add and Subtract
Common Core standards encourage the use of models to build understanding in math. This lesson shows sometimes reluctant 2nd graders that models are helpful tools in solving mathematical problems.
Better Lesson
Better Lesson: Multiplying With Fractions
Sixth graders will use their understanding of multiplying fractions and apply it to dividing fractions which is a key component in common core. Included in this lesson are a closing activity, a link to a website for area models, and a...
Doina Popovici
Math Play: Multiplying Fractions Soccer Game
An online soccer game where students can practice multiplying fractions to score goals!
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...
CK-12 Foundation
Ck 12: Using Probability to Make Decisions
Use this Common Core Math Standards Browser to search specific math concepts and their corresponding standards. This page focuses on Using Probability to Make Decisions. Click on the links to find lessons, activities, videos, and study...
Homeschool Math
Homeschool Math: Fraction Multiplication and Area
This fifth-grade lesson explores the area of a rectangle with fractional side lengths. We tile the rectangle with unit rectangles and show that the area is the same as would be found by multiplying the side lengths. We multiply...
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