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Welcome to the SchoolTutoring Academy Homework Help Site!

This site is a free academic resource from the Academic Directors at SchoolTutoring Academy. We encourage you to suggest a topic by writing to

16 Sep Posted by in Algebra | Comments Off

Math Review of Solving Systems of Equations Using Substitution

Overview A system of equations refers to at least 2 equations that have at least one variable in common. Each equation gives a piece of information about the variables that it contains. One way the variables can be solved is by using substitution. Solving Systems of Equations with One Variable Suppose that a system of two […]


15 Sep Posted by in Algebra, Math Fundamentals | Comments Off

Back to School Math Review of Positive and Negative Numbers

Overview Think of the number zero as the center of the number line. It is neither positive nor negative. Negative numbers are on the left side of zero on the number line, which stretches to infinity going left. Positive numbers are on the right side of zero on the number line, which stretches to infinity […]


12 Sep Posted by in Chemistry | Comments Off

What Information Does a Chemical Equation Tell Us?

Overview A chemical reaction can be described by discussing the chemical substances at all steps. It is more efficient to use a chemical equation than words, and there are agreed-upon conventions to summarize the reaction, the substances that take part in it, the products, and the amounts. Chemical Reaction A chemical reaction starts with substances […]


11 Sep Posted by in Chemistry | Comments Off

Review of How to Study Chemistry

Overview Many students in high school decide to take a chemistry class to fulfil a science requirement for graduation, in order to attend college, or as a basis for a later career in medicine or one of the other sciences. In order to be successful in chemistry, students take part in lab experiments and participate […]


10 Sep Posted by in Chemistry, Science | Comments Off

Scientific Measurement of Length, Mass, Volume, and Temperature

Overview Accurate observations of phenomena are one of the keys to success in lab sciences such as chemistry, physics, and biology. The metric system, or international system (SI), is used to describe measurements of many quantities, such as length, mass, volume, and temperature. Scientific Measurement of Length The measurement of length was one of the […]