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Computational Word Problems
Computational Word Problems What are computational word problems? Many standardized tests like the HSPT, ISEE, ACT, and SAT will ask you to perform basic arithmetic computations with word problems. You will not see [...]
Central Angle, Arc Length, and Sector Area of Circles
Central Angle, Arc Length, and Sector Area of Circles Many standardized tests like the ACT, SAT, GRE, and GMAT ask questions related to the central angle, arc length, and sector area of circles. Rather [...]
Verifying Trigonometric Identities
Verifying Trigonometric Identities Lessons in Algebra 2, Trigonometry, and Pre-Calculus courses often involve verifying trigonometric identities. We are so accustomed to solving equations that "verifying" or "providing" identities can be difficult. Follow the steps [...]
Subject-Verb Agreement
Subject-Verb Agreement We often hear teachers discuss "Subject-Verb Agreement." So we know that verbs should agree with the subject. As simple as this sounds, it can often be confusing. This guide will help! Click [...]
Physics: Lenses and Mirrors
Physics: Lenses and Mirrors Physics lessons teach that 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. [...]
Biology & Ecology: Hardy-Weinberg Equilibrium
Biology & Ecology: Hardy-Weinberg Equilibrium Students in Biology and Ecology classes focus on learning how to use the Hardy-Weinberg Equilibrium Equations. The Hardy-Weinberg Equilibrium Principle states that allele and genotype frequencies in a population [...]
Prep for the HSPT Verbal Section
Prep for the HSPT Verbal Section 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 [...]
Multiplying Matrices
Multiplying Matrices (Multiplying) 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 [...]