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## Navigating the High School Math Maze

Math is confusing enough without having to deal with lots extra choices. But if you’re a highschooler, there are choices galore. IB, AP Calc, regular Calc, Precalc, Algebra II with Trig, Algebra with Honors, Math Analysis… it all starts to sound like some strange underworld maze that probably has a ...

## Law of Cosines: How to Use & Practice Examples

We have already seen how to solve triangles using the Law of Sines. Such problems involve two sides and two angles. The Law of Cosines (or the Cosine Rule) is used when we have all three sides involved and only one angle. The formula is: [latex  latex size=”3″]c^{2} = a^{2} ...

## How to Survive Organic Chemistry Lab

Chemistry is both an art and science. In the classroom, you study the science part—the way that carbon atoms form bonds and react to make interesting molecules. And as most chemistry students know, there is an awful lot of science to memorize. Where Science Meets Art Ironically, the lab component ...

## Difference between Anatomy and Physiology

First, you’ll need to know all the important parts of the body—the things a humanoid creature needs to survive. This includes everything from organs and tissues down to the macromolecules and atoms that make up our cells. You’ll also need to know where the important bones, muscles, and organs are ...

## Law of Sines: How to Use & Practice Examples

The Law of Sines (or the Sine Rule) tells us that the ratio of a side length to the sine of its opposite angle is the same for all three sides. As a formula, it looks like this: [latex  latex size=”3″]\frac{a}{sin\alpha}=\frac{b}{sin\beta}=\frac{c}{sin\gamma}[/latex] or [latex  latex size=”3″]\frac{sin\alpha}{a}=\frac{sin\beta}{b}=\frac{sin\gamma}{c}[/latex]   In the formula, a ...

## Summer Learning Loss

“Practice makes permanent”—but any athlete will tell you that if you don’t keep practicing, your form gets shaky, your power decreases, and your muscle memory starts to fade. Your brain works the same way, and lots of research has shown that students score lower on standardized tests at the end ...

## What is Biochemistry?

Biochemists: the Hackers of Science Pop quiz! Have you ever: – Used a special shampoo to make your hair curlier, stronger or softer? – Bought a diet soda or energy drink? – Used a special cleaner to get grass stains out of a sports uniform? If so, you should be ...

## SOHCAHTOA

SohCahToa is an acronym which helps you remember how to find the basic trig functions: sine, cosine and tangent. Use SohCahToa with a right triangle only! To check if your triangle is the right triangle, look for the 90-degree angle. It’s the largest one in the triangle and it usually ...

## Common Core Standards ELA (English Language Arts)

The Common Core State Standards Initiative is a state-led effort to create a consistent set of academic standards that states can adopt and implement across the nation. The standards have been developed for Kindergarten through 12th grade students in both English Language Arts (ELA) and Mathematics. Across the country, states ...

## Educator.com Free Trial & Login

Looking for a free trial of Educator.com? Now you don’t need a code since the first part of every lesson is free to all site visitors plus several full sample lessons. Everything is automatic so you can just click any lesson to watch the free first few minutes.  Membership only ...

• ## Surface Area and Volume of a Sphere

The surface area of a sphere is the number of square units that will exactly cover its surface. The formula for the surface area of a sphere is given by: A = 4r²π where A represents the area and r ...

• ## Atomic Orbitals

There was a time when Chemistry was kind Lewis dots formed bonds With their orbitals aligning! There was a time… Then it all went wrong. We all dreamed a dream, in time gone by… when atoms only needed eight electrons ...