ACT

Numeracy Review: Classifying Numbers

Numeracy Review: Classifying Numbers 258 300 School Tutoring

In mathematics, we can classify all numbers into groups based on their shared characteristics and type. Many of the classifications are subcategories of each other, so often a single number…

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Mathematics Review: Significant Figures

Mathematics Review: Significant Figures 291 232 School Tutoring

Significant figures are an important aspect of doing calculations in both chemistry and physics. Significant figures allow a reader to know how precise certain calculations are and how much of…

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Nine Divisibility Rules to Remember

Nine Divisibility Rules to Remember 340 250 School Tutoring

There are many tricks which can be used by students to help them develop their skills in mathematics. Here are some quick ways to check the divisibility of any number.…

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What is a Preposition?

What is a Preposition? 417 364 School Tutoring

A preposition connects a noun, pronoun or phrase to the other words in a sentence. The word or phrase that the preposition introduces is called the object of the preposition.…

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ACT Sciences: Electrons and Quantum Numbers

ACT Sciences: Electrons and Quantum Numbers 701 330 School Tutoring

Quantum numbers allow a new model to explain the emission spectra of elements with more than 1 electron. There are 4 quantum numbers: n, l, ml and ms. The first…

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SAT Math: The Symbol Problem

SAT Math: The Symbol Problem 200 166 School Tutoring

The symbol problem is a recurring theme in the SAT mathematics session. What I’m referring to as the symbol problem is a particular problem type that appears on almost every…

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DNA Transcription

DNA Transcription 437 180 School Tutoring

Transcription is the process in which RNA is made from DNA. The strand of RNA is made complementary to the DNA. In eukaryotes, this process occurs in the nucleus, while…

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Molecules: Intermolecular Forces

Molecules: Intermolecular Forces 896 319 School Tutoring

Intermolecular forces are the forces that exist between 2 individual molecules. This is different from intramolecular forces, which are the forces that exist within a molecule (ie. ionic/covalent bonds). Intermolecular forces are generally…

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Calculating Volume for Various 3D Objects

Calculating Volume for Various 3D Objects 400 231 School Tutoring

Volume is the space enclosed by a three-dimensional object. When calculating volume, you are calculating the number of cubic units that object can hold inside. Cube Volume = s3 =…

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Math Review: Adding Fractions

Math Review: Adding Fractions 350 360 School Tutoring

There are 3 simple steps to add fractions: Step 1: Make sure the bottom numbers (the denominators) are the same. Step 2: Add the top numbers (the numerators) together and…

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