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Math Review of Work Problems 150 150 Deborah

Math Review of Work Problems

Overview: Work problems are types of problems that deal with people or machines that work at different rates of speed.  Many of them use a formula that is similar to motion problems.  The formula w=rt is used relating the rate of work, time, and the work done.  Solving story problems involving work combines the steps…

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Math Review of the Circle 150 150 Deborah

Math Review of the Circle

Overview: The circle is the conic section that is formed when a plane is perpendicular to the axis of a cone, so the circle cuts through it evenly.  It is one of the simplest of all the geometric forms. What Is a Circle? The circumference of a circle is defined as the points in a plane…

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Introduction to Genetics 150 150 Teaching Staff

Introduction to Genetics

What is Genetics? Genetics is the study of how various traits are passed down generations. Traits are determined by the inheritance of genes, units of genetic information found on chromosomes. Humans have a total of 46 chromosomes, 23 inherited from an egg and 23 inherited from a sperm. Of the 46 chromosomes, each person has…

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Determining Oxidation Numbers 150 150 Teaching Staff

Determining Oxidation Numbers

Overview: Balancing REDOX reactions can be more difficult than balancing any normal equation; however, there are steps that you can take to ensure that you do it correctly and end up with the correct answer. The first thing you need to know in order to balance REDOX reactions is elements Oxidation Numbers. To make things…

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Math Review of Combining Like Terms 150 150 Deborah

Math Review of Combining Like Terms

Overview: One of the first steps in solving an equation is to combine like terms.  Terms can be combined when they have the same variables and they have the same exponents.  Otherwise they are unlike and cannot be combined to solve the equation. Real Numbers and Variables Are Unlike Terms Suppose the expression is 3z…

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Math Introduction to Solving Radical Equations 150 150 Deborah

Math Introduction to Solving Radical Equations

Overview: A radical equation is an equation that contains a radical that includes a variable.  It is possible to solve many radical equations in two steps.  However, it is important to check the solution in the original equation to make sure it checks, as it may not be a real solution. How Does a Radical…

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Math Introduction to Logic and Algebra 150 150 Deborah

Math Introduction to Logic and Algebra

Overview: Some of the relationships that are central to algebraic reasoning are also important to logical reasoning.  While algebra deals with numbers and variables that are linked together in relationships called equations, logic deals with statements that are linked in relationships called propositions.  Just as open sentences can be true or false by their solutions,…

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Math Introduction to Solving Problems with Three Variables 150 150 Deborah

Math Introduction to Solving Problems with Three Variables

Overview: Solving systems of equations with three variables is similar to solving systems of equations with two variables.  The difference is that substitution occurs in two steps rather than in one step. Are There Any Variables That Can Be Eliminated? In order to solve a system in three variables, first check to see if one…

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Types of Chemical Reactions 150 150 Teaching Staff

Types of Chemical Reactions

Overview: Chemical reactions occur when two or more elements are introduced to each other. A few molecular and atomic rearrangements occur in order to change our products. There are 5 main types of chemical reactions as follows: Synthesis Decomposition Single Displacement Double Displacement Combustion Synthesis A synthesis reaction is the combination of two or more…

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What are Greenhouse Gases? 150 150 Teaching Staff

What are Greenhouse Gases?

Overview: For the past several years we have become increasingly aware of the adverse effects that humans have had to the Earth and various species and ecosystems within it. One of the major topics frequently discussed is called “Global Warming” which is directly related to the emission of greenhouse gases that contribute to the destruction…

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