Law of Sines and Law of Cosines
Law of Sines and Law of Cosines are special trig rules that can be used on non-right (acute or obtuse) triangles. This guide summarizes the rules, along with strategies and tips for each and examples [...]
Log Rules
Logs "undo" Exponents, and are thus a vital concept in Math and Science. This guide reviews the 7 Log Rules and how to Expand, Condense, Solve, and Simplify Logarithmic Expressions. Click here for the guide [...]
Simplifying Exponential Expressions
Exponential Expressions are a component in most math and science curriculum. Despite the various ways exponents are used, there are only 8 Exponent Rules you need to know. This guide has these rules as well [...]
Dangling Modifiers
Dangling modifiers make it so that the subject and its verb or adjective do not "match." This often leads to confusing and easily misinterpreted sentences. Since the purpose of writing and speaking is to convey [...]
Past Perfect and Present Perfect Tenses
The conjugation of verbs can be confusing in any language. In English, especially, the use of the Past Perfect and Present Perfect tenses can be quite difficult. This guide will explain the differences between these [...]
General Essay Outline
There are many different types of essays you may be asked to write: Narrative, Descriptive, Expository, Persuasive, Compare & Contrast, and others. While each type of essay has its own requirements, the structure is basically [...]
Molecular Geometry
The VESPR Theory allows us to predict models of molecular shapes, which thus helps us better understand the behaviors and interactions of molecules. Use this guide to help you determine the Molecular Shape, Electron Geometry, [...]
“Who” versus “Whom”
Who should I vote for? Whom should I vote for? … Which is it?!?! This guide will help you determine when to use "who" and when to use "whom" properly in modern, everyday situations. Click [...]