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An Earth Science Review: Earthquakes, Water, and Magma 150 150 Deborah

An Earth Science Review: Earthquakes, Water, and Magma

Overview:  Tectonic Plates The earth’s crust and upper mantle are not an even surface, but are made up of plates with irregular boundaries, called tectonic plates, that move and shift underneath the ocean and along the continents.  Most of the time those plates move smoothly past each other and do not cause a problem.  When…

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Biology: Rare Blood Types and Genetics 150 150 Deborah

Biology: Rare Blood Types and Genetics

Overview:  What Are Blood Types? One of the most common experiments in biology class is for students to find their blood types from a drop of their own blood.  However, there are many other factors that can be found in blood besides those that cause the ABO blood groups and the RH blood groups.  Some…

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Factoring Polynomials 150 150 Deborah

Factoring Polynomials

Overview:  Factoring Polynomials In order to factor polynomials, it is important to find the greatest common factors and use the distributive property.  Use the integral coefficients to rewrite the polynomial and find the factors.  The difference between finding prime factors of a real number and prime polynomials is that there are variables involved.  Multiplying back…

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Lines, Slopes, and Intercepts 150 150 Deborah

Lines, Slopes, and Intercepts

Overview:  Graphing Linear Equations One way to represent a linear equation  is to graph it on the coordinate plane.  In order to graph the line accurately, it is important to know what the slope of the line is.  If the equation is in the form y = mx +b the point at which the line…

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Exponential and Logarithmic Functions 150 150 Deborah

Exponential and Logarithmic Functions

Overview:  What Are Exponential Functions? Exponential functions are a special type of mathematical functions that follow the formula y = ax.  The constant a and the exponent x are both real numbers.  In addition, a is not equal to 1 and a >0. How Are Exponential Functions Graphed? When exponential functions are graphed in the…

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English Grammar Lesson: Setting and Tone 150 150 Deborah

English Grammar Lesson: Setting and Tone

Overview:  Location, Location, Location The setting of a story locates it in time or place.  At times, the setting of a story can be so important that it is like another character.  At other times, it is a backdrop to the action of the plot.  The setting is not random, but deliberately chosen for essential…

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New Ways to Fight Bacteria: A Biology Review 150 150 Deborah

New Ways to Fight Bacteria: A Biology Review

Overview of Bacteria Bacteria are microorganisms that are among the earliest forms of life on Earth.  They are found in all different environments, from very cold to very hot.  Some forms of bacteria have even been found in rocks deep within the Earth’s crust, feeding on rocks.  Most species are benign, but a number cause…

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The Mathematical Foundations of Music 150 150 Deborah

The Mathematical Foundations of Music

Algebra and Geometry in Music? The mathematical foundations of music involve algebra and geometry, in a complex relationship that has been known for thousands of years.  Ancient mathematicians from China to Greece were interested in the relationship between music, nature, and numbers.  The acoustics of sound show the mathematical relationships that underlie pitch, loudness, and…

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Let’s Do a Pre-Algebra Review of Inequalities 150 150 Deborah

Let’s Do a Pre-Algebra Review of Inequalities

Overview:  What Are Inequalities? Most of the time, in order to solve problems in pre-algebra or algebra, students use equations, where number sentences are exactly equal.  However, some number sentences use expressions that are inequalities, such as < (less than), > (greater than), ≤ (less than or equal to), or ≥ (greater than or equal…

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Sines, Cosines, and Tangents 150 150 Deborah

Sines, Cosines, and Tangents

Overview:  Introduction to Trigonometric Functions An angle is formed when a ray is rotated in a coordinate plane around the x axis (the horizontal axis).  The measurements of the length of the sides of a triangle have a special relationship to one another, called the sine, the cosine, and the tangent.  They are ratios, similar…

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