Lenses and Mirrors
Lenses and Mirrors refract rays to form an image. Keeping track of whether this image is inverted or upright, magnified or shrunk, etc can be challenging as the image's characteristics depend upon the object, lens/mirror, [...]
Hardy-Weinberg Equilibrium
Students in Biology class focus on learning how to use the Hardy-Weinberg Equations. The Hardy-Weinberg Equilibrium Principle states that allele and genotype frequencies in a population will remain constant from generation to generation in the [...]
HSPT Verbal
The HSPT is a high school placement test given to 8th graders who want to be accepted into an Independent or Catholic high school. Click here to learn more about the high school placement tests. [...]
Multiplying Matrices
Matrices can seem like a fun puzzle to some . . . or a confounding nightmare to others. This guide will help with one of the most complicated concepts in regards to matrices - the [...]
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 [...]
