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Math Review of Two-Step and Multi-Step Equations 150 150 Deborah

Math Review of Two-Step and Multi-Step Equations

Overview Not all equations can be solved in one step. Many take several steps to solve, but the principles of solving one-step equations can be applied. Use the order of operations to simplify the equation; math properties to combine like terms; then apply inverses to isolate the variable on one side of the equation in…

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Math Review of One-Step Equations 150 150 Deborah

Math Review of One-Step Equations

Overview Some algebra equations can be solved with one step, using operations such as addition, subtraction, multiplication, and division. In order to solve them, use inverse operations so that the variable is on one side and real numbers are on the other side. Then, solve the problem with arithmetic. Balanced Equations An equation is solved…

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Biology Review of Land Biomes 150 150 Deborah

Biology Review of Land Biomes

Overview Biomes are environments that usually have similar climate, physical conditions, and broad general features. Similar organisms tend to gather in areas where they can thrive, because the climate and geographic location support comparable populations of plants and animals. Tropical Biomes Some types of tropical biomes include tropical rain forests, tropical dry forests, and tropical…

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Biology Review of Ecosystems 150 150 Deborah

Biology Review of Ecosystems

Overview An ecosystem is an assembly of everything that is in a particular area, both living creatures and nonliving elements. Some ecosystems, such as a square meter of forest, are dense with many different types of creatures and plants, while other ecosystems may be more sparsely populated. The different living organisms depend upon one another…

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English Review: Beyond the Essay Introduction 150 150 Deborah

English Review: Beyond the Essay Introduction

Overview The draft outline has been written, a tentative thesis statement has been formed, and a provisional introduction is on the page. The computer cursor is blinking, but at least there are words on the page. The body of the essay gives students opportunities to support arguments with proof, including explanations of how something works,…

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English Review: Writing an Essay Introduction 150 150 Deborah

English Review: Writing an Essay Introduction

Overview Writing the introduction to an essay can be a confusing process. Students have to decide whether to explain why the topic is important, provide background or description, or just present the thesis statement and the main points from the outline. Sometimes it is easier to use the thesis statement in a rough draft and…

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Math Review of Simplifying Expressions 150 150 Deborah

Math Review of Simplifying Expressions

Overview Students can use the commutative, associative, and distributive properties of addition and multiplication to simplify algebraic expressions. Problems are more easily solved if compatible terms can be combined first. Some problems can then be solved mentally. Compatible Terms Real numbers, whether whole or mixed, are constants that can be added, subtracted, multiplied or divided.…

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Math Review of Order of Operations 150 150 Deborah

Math Review of Order of Operations

Overview Order of operations within math problems gives students a set of rules to follow in order to get the same answer. In the standard order of operations, expressions within parentheses are worked first, then exponents, then multiplication, division, addition, and subtraction. Conventional Order Suppose the problem is as simple as 85 +9 X 2.…

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Science Review of Volcanoes 150 150 Deborah

Science Review of Volcanoes

Overview Volcanoes on Earth are usually caused when hot lava, volcanic ash, and gases escape from chambers below the crust. Although many volcanic mountains have cones with craters, other types of volcanoes exist. Volcanic activity occurs on land, under the sea, and elsewhere in the Solar System and beyond. Formation of Magma Temperatures are hot…

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Science Review of Earthquakes 150 150 Deborah

Science Review of Earthquakes

Overview Earthquakes are caused when energy is suddenly released in the earth’s crust, so that it shakes and trembles. Most are mild, but some are violent, resulting in massive devastation, injury, and loss of life, such as the recent earthquakes in Nepal in April and May, 2015 Why Earthquakes? The tectonic plates that make up…

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