Free Homework Help

Our education staff publish regular articles, tips and tutorials to help students with their homework
Math Review of Angles and Parallel Lines 150 150 Deborah

Math Review of Angles and Parallel Lines

Overview: Angles and the lines that form them are an essential part of geometry.  Understanding the relationship between parallel lines, lines that are not parallel, and the different types of angles within figures is important to determining their measurement. What Are the Relationships Between Angles on a Straight Line? Suppose that three points A, B,…

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Math Review of Converting between Conventional and Metric Systems 150 150 Deborah

Math Review of Converting between Conventional and Metric Systems

Overview: In the United States, two separate measurement systems are used, the conventional or English system and the metric system.  The conventional system with inches, pounds, cups, and quarts, is in use in many aspects of everyday life, in carpentry, and in many trades, while the metric system is used in science, medicine, and many…

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Pedigree: How to determine your genetic lineage 150 150 Teaching Staff

Pedigree: How to determine your genetic lineage

Overview: Pedigrees are visual representations of a family’s genetic history. Each pedigree focuses on one specific gene that is studied by geneticists. There are several benefits of studying a family’s genetic history. By reviewing past generations, scientists can deduce the mode of inheritance for a specific gene. A person can study their family’s pedigree to…

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Math Review of Rational Exponents 150 150 Deborah

Math Review of Rational Exponents

  Overview Rational exponents are an extension of the rules of exponents. They can be solved by applying those rules and often take more than one step. What Is an Exponent? An exponent such as 32 is a direction to multiply 3 by itself twice, such as 3∙3, or 9.  Similarly, an exponent such as…

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How to Prepare a Solution of Proper Concentration 150 150 Teaching Staff

How to Prepare a Solution of Proper Concentration

Overview: When in a chemistry lab or just writing a test, many students struggle with how to create a solution of known concentration. Students find it difficult because they try to calculate the solution in terms of moles, which is a unit that cannot be measured in the lab. There are some easy to follow…

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Math Review of Estimating 150 150 Deborah

Math Review of Estimating

  Overview: Estimation is an important skill in mathematics, because sometimes an approximate figure is needed in everyday life.  Suppose a person is deciding if they have enough money to buy all the items on a shopping list or how many materials will be needed to finish a project.  Types of estimation include rounding up,…

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Newton’s Three Laws of Motion 150 150 Teaching Staff

Newton’s Three Laws of Motion

Overview: Sir Isaac Newton is well-known for his work on creating the three laws of motion based on the theories of previous scientists as well as his own speculations. These 3 simple, intuitive laws lay the foundation for the basics of classical, Newtonian mechanics. The following are Newton’s three laws in more detail: 1. Newton’s First…

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Math Review of the Hyperbola 150 150 Deborah

Math Review of the Hyperbola

Overview: A hyperbola is a conic section that is formed when a plane intersects a double cone, so that it forms two identical curves that go in opposite directions.  It has two separate foci and the two branches are mirror images of each other. What Is a Hyperbola? The two branches of the hyperbola have…

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Math Review of the Parabola 150 150 Deborah

Math Review of the Parabola

Overview: A parabola is a conic section that forms an open curve.  Graphs of quadratic functions have the shape of a parabola. What Is A Parabola? A parabola is the curve that is formed on either side of an axis of symmetry.  If the parabola is vertical, a line to one side of the parabola…

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Math Review of Motion Problems 150 150 Deborah

Math Review of Motion Problems

Overview: Motion problems are special types of rational expressions that are based on the relationship between distance, rate, and time (d=rt).  In order to solve them, it is important to read the story problem, recognize the essential information, and organize the facts in an equation. Reading the Story Problem Story problems usually contain all the…

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