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Science Kids: Science Images: Minus Symbol
A minus symbol inside a circular glossy icon.
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Visual Fractions:strict Fraction Subtraction With Circles
Use this interactive site from Visual Fractions to practice subtraction with fractions using circles. You will need to answer the questions with mixed numbers in lowest terms.
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Visual Fractions:strict Fraction Subtraction With Circles
Use this interactive site from Visual Fractions to practice subtraction with fractions using circles. You will need to answer the questions with mixed numbers in lowest terms.
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Houghton Mifflin: Addition and Subtraction
Addition and subtraction are covered here, with definitions, tips & tricks, lesson plans, and a section covering typical student questions.
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Houghton Mifflin: Addition and Subtraction
Addition and subtraction are covered here, with definitions, tips & tricks, lesson plans, and a section covering typical student questions.
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Houghton Mifflin: Addition and Subtraction
Addition and subtraction are covered here, with definitions, tips & tricks, lesson plans, and a section covering typical student questions.
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Houghton Mifflin: Addition and Subtraction
Addition and subtraction are covered here, with definitions, tips & tricks, lesson plans, and a section covering typical student questions.
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Houghton Mifflin: Addition and Subtraction
Addition and subtraction are covered here, with definitions, tips & tricks, lesson plans, and a section covering typical student questions.
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Visual Fractions: Fraction Subtraction With Circles
Use this site to learn how to subtract fractions using circles at this site from Visual Fractions. You will receive immediate feedback on your answers.
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Eqnarray11
In this lesson, special cases of factoring are described, including perfect squares, difference of squares, and difference and sum of cubes. Exercises with answers included.
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Eqnarray23
In this lesson, special cases of factoring are described, including perfect squares, difference of squares, and difference and sum of cubes. Exercises with answers included.
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Eqnarray26
In this lesson, special cases of factoring are described, including perfect squares, difference of squares, and difference and sum of cubes. Exercises with answers included.
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Eqnarray29
In this lesson, special cases of factoring are described, including perfect squares, difference of squares, and difference and sum of cubes. Exercises with answers included.
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Personal Site: Prisms and Antiprisms
This site is a personal site that explains the difference between a prism and an antiprism. Pictures of a heptagonal prism and a heptagonal antiprism help illustrate this difference.
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Personal Site: Prisms and Antiprisms
This site is a personal site that explains the difference between a prism and an antiprism. Pictures of a heptagonal prism and a heptagonal antiprism help illustrate this difference.
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Etc: Maps Etc: Mean Average Temperatures in North America, 1906
A map from 1906 of North America showing the mean annual isotherms of the region given in degrees Fahrenheit. "The climate of North America naturally varies greatly, depending on latitude, the general atmospheric circulation or direction...
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Etc: Maps Etc: Mexico, Central America, and the West Indies, 1898
A map from 1898 of Mexico, Central America and the West Indies. The map includes an inset map of Cuba and the Isthmus of Nicaragua. "The surface of the Rocky Mountain highland in Mexico is quite similar to that of the great plateau...
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Educational Technology Clearinghouse: Maps Etc: South American Heat Belts, 1901
A map from 1901 of the Heat Belts in South America showing the Heat Equator in July, regions where it is always hot, regions of temperate winters and hot summers, and regions where it is always temperate. "There is comparatively little...
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Etc: Maps Etc: Heat Belts in South America, 1898
A map from 1898 of the Heat Belts in South America showing the Heat Equator in July, regions where it is always hot, regions of temperate winters and hot summers, and regions where it is always temperate. "There is comparatively little...
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Wikipedia: Stream
This article presents information on streams and various terminology associated with streams. In the article, the difference between intermittent and blue-line streams are discussed. Also, the difference between first-, second-, third-,...
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Ucar: About Temperature
This site from the University Corporation of Atmospheric Research provides a lengthy page covering numerous topics including the difference between heat and temperature, the use of different temperature scales, thermal expansion, how a...
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Orchestral Natural Horn
Arizona State's descriptions of the horn are broken up by illustrations of the horn, players, and music. There is a big discussion of crooks (not the kind that go to jail), but the kind that are made when you bend metal! The author notes...
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Cor Solo
Arizona State's descriptions of the horn are broken up by illustrations of the horn, players, and music. There is a big discussion of crooks (not the kind that go to jail), but the kind that are made when you bend metal! The author notes...
Curated OER
Perseus: The Greek City States and Religious Festivals
Discusses the difference between modern and ancient Greek Olympic games, and goes into depth about the religious festivals that took place. Additional links to related material.
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