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Review of Chemical Formulas 150 150 Deborah

Review of Chemical Formulas

 Overview: Chemical formulas are abbreviations for chemical compounds.  They contain both the elements in the compound and  the ratio of elements to one another.  They are used as shorthand to describe chemical reactions. How Are the Elements Symbolized? The name of each element in the periodic table is abbreviated so that each element has its…

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Nonstandard English: Negative Sentences 160 128 School Tutoring

Nonstandard English: Negative Sentences

Overview:  Why Double Negatives? Some of the most common examples of nonstandard English occur when negative words and statements are misused.  Negatives as alternatives are contained in the English/grammar tests on both the SAT and the ACT to trap the unwary.  The errors can be compounded because double negatives were once considered standard in English,…

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Back-to-School Review of Apostrophes 150 150 Deborah

Back-to-School Review of Apostrophes

Overview: Apostrophes are used to form contractions and possessives.  They  denote missing letters in contractions, and who possesses the object in possessives.  Many possessives have homonyms, so it is important whether to know which word to use. What About Apostrophes in Contractions? Apostrophes in contractions show that there are letters missing, such as can’t, shouldn’t,…

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Review of Capitalization 150 150 Deborah

Review of Capitalization

Overview: Capitalizing words within a sentence or title alerts readers to the importance of those words.  Besides the first word beginning a sentence, proper nouns, special events, some awards, specific dates, and holidays are capitalized.  Key words are capitalized within titles of works. What Are Some General Rules? The first word of any type of…

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Back-to-School Spelling Review of Plurals 150 150 Deborah

Back-to-School Spelling Review of Plurals

 Overview: Most plurals are regular and formed by adding -s or -es.  However, other words, such as child, have irregular plural forms.  A few words, such as deer and sheep, do not have a plural form at all. What Are Regular Forms that Add S? Many nouns form plurals by adding -s, such as pencil,…

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Review of Physical and Chemical Changes 150 150 Deborah

Review of Physical and Chemical Changes

 Overview All matter can undergo physical and chemical changes.  While physical changes do not affect the composition of matter, chemical changes transform one type of matter to another type of matter through chemical reactions.  Without chemical reactions, many processes would not be possible, including life itself. What Are Physical Changes? If a substance changes physically,…

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Math Review of Graphs and Tables 150 150 Deborah

Math Review of Graphs and Tables

Overview: Graphs and tables are good ways to show mathematical relationships and display data.  They are an important part of solving problems and illustrating trends.  Although the same information can be listed in a paragraph of facts, it is much harder to follow. What about Tables? Writing data in the form of a table is…

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Review of Open Sentences in Mathematics 150 150 Deborah

Review of Open Sentences in Mathematics

Overview: Open sentences in mathematics are sentences that contain variables.  They can be true or false depending upon the numbers that are substituted for the variables.  Solving open sentences to make them true is an important part of algebra. What Are Numerical Expressions? Numerical expressions contain numbers only, such as 4/5, 2 + 4 =…

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Review of Order of Operations and Parentheses in Mathematics 150 150 Deborah

Review of Order of Operations and Parentheses in Mathematics

Overview The order of operations is a set of rules in algebra to define what operations must be done first in order to obtain the correct answer to a problem.  Without sequencing rules, it would be possible to work problems and get different answers depending on the way the numbers and variables are combined.  Instead,…

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Math Review of the Distributive Property 150 150 Deborah

Math Review of the Distributive Property

Overview: The Distributive Property of Multiplication over Addition is a good way to simplify calculations.  It combines two different operations in a shortcut to make solving variables easier. The Distributive Property of Multiplication over Addition The general rule for this property is for any numbers a, b, and x , ax + bx = (a…

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