Sophia Learning
Sophia: Converting Square Units in the Metric System
Square units in the metric system are investigated in this mathematics lesson. Students watch examples that explore how to convert square units.
Khan Academy
Khan Academy: Find Area by Counting Unit Squares
Find the area of shapes by counting the unit squares inside them. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video tutorial, or receive hints on how to find area....
Library of Congress
Loc: America's Story: Square Dancing
Square dancing has been part of American culture since the colonial settlers blended their varied traditions together. Contains historic photos, and an audio track of "Gents Go Center." Requires RealPlayer.
National Institute of Standards and Technology (NIST)
International System of Units: Si Base Units
This is the definitive source for information on SI base units, derived units, squares, cubes, luminosity, field strength and flux density.
CK-12 Foundation
Ck 12: Appropriate Tools for Measurement of Squares and Rectangles
[Free Registration/Login may be required to access all resource tools.] Choose appropriate tools and units for given measurement situations involving squares and rectangles.
Illustrative Mathematics
Illustrative Mathematics: 3.md the Square Counting Shortcut
This is a rectangle subdivision task; ideally instead of counting each square. students should break the letters into rectangles, multiply to find the areas, and add up the areas. Aligns with 3.MD.C: CCSS.Math.Content.3.MD.C.6 Measure...
Sophia Learning
Sophia: Converting Between Square Inches and Centimeters: Lesson 1
The purpose of this lesson is to demonstrate conversion between square inches and square centimeters. It is 1 of 10 in the series titled "Converting Between Square Inches and Centimeters." [4:04]
Science Made Simple
Science Made Simple: Area Measurement Conversions
This site allows you to type in an area of measurement you want to be converted. The site converts it for you!
Illustrative Mathematics
Illustrative Mathematics: 3.md, 3.g, 3.nf Halves, Thirds, and Sixths
The purpose of this task is for students to use their understanding of area as the number of square units that covers a region, to recognize different ways of representing fractions with area, and to understand why fractions are...
Khan Academy
Khan Academy: Counting Unit Squares to Find Area Formula
This tutorial includes a video, questions and explanations around using unit squares to see why multiplying side-lengths can also find the area of rectangles.
Math Is Fun
Math Is Fun: Activity: Garden Area
The learning activity explores area. Students determine the area of their garden by counting squares.
Math Medics
S.o.s. Math: Algebra
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...
Unite for Literacy
Unite for Literacy: Know and Learn: Spot the Shapes
A book about the shapes around us. Includes audio narration in 17 additional languages with text in English.
Math Medics
S.o.s. Math: Units of Conversion
Use this chart to easily identify conversions using square measurements, cubic measurements, and linear measurements.
Khan Academy
Khan Academy: Transition From Unit Squares to Area Formula
Find the area of rectangles by multiplying side-lengths. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Other
All math.com: Us/metric Conversion Tables
Convert metric measurements to U.S. Measurements and the reverse, too. Easy to follow tables have sections for area, length, mass,temperature and volume.
National Council of Teachers of Mathematics
The Math Forum: Seventh Grade Math: Area and Perimeter
Learn how to enlarge drawings, figure out how much tile to buy to cover a specific floor, and learn about area and perimeter. These and other lesson plans are provided, including a fun interdisciplinary plan featuring dragons.
Quia
Ixl Learning: What Is Surface Area?
Brush up on your math skills relating to surface area then try some practice problems to test your understanding.
Wolfram Research
Wolfram Math World: I
The imaginary number (also called the imaginary unit) is defined as the square root of negative one. This site explains the rational for the existence of the imaginary number "i" and gives formulas involving "i" including Euler's...
Other
Calculator.net: Surface Area Calculator
Use these calculator tools to find the surface area, in your choice of units, of a sphere, cone, cube, cylinder, rectangular prism, capsule, ball cap, conical frustum, ellipsoid, or square pyramid. Includes a reference section listing...
Library of Congress
Loc: The Anarchist Movement
This page has a collection of links to historic newspaper articles from Chronicling America: American Historic Newspapers on the anarchist movement in the United States. The article dates range from 1896 to 1920.
Oswego City School District
Regents Exam Prep Center: Complex Numbers
A wealth of material to help you plan classroom instruction on complex numbers: several lessons that cover the number i, square roots of negative numbers, and operations involving complex numbers; practice activities, some of which...
Gilder Lehrman Institute of American History
Gilder Lehrman Institute: Immigration and Migration
[Free Registration/Login Required] A lengthy essay discussing the differing opinions about immigration and the role of immigrants in the United States in the latter half of the 19th century and the early 20th century. Find out about the...
Maps of Mexico
Virtual Picture Travel Map of Massachusetts
Click on Massachusetts on the US map in order to Travel there and take a virtual tour of Boston. Visit places of interest such as Harvard University, MIT, John F. Kennedy Library and Museum, the Freedom Trail, Copley Square, Trinity...
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