- 42 lessons
- 0 quizzes
- 10 week duration
An introduction to numerical computation. Emphasis is placed on scientific and engineering notation, the rule of significant figures, and converting between SI and Imperial units.
Fractions, Percentage, Ratios and Proportion
Emphasis here is placed on understanding fractions, percent, and using ratios to compare quantities and set up proportions to solve problems.
Introduction to Algebra
Functions and Graphs
This unit focuses on analyzing and understand the characteristics of various shapes, both 2D and 3D.
- Identify, measure, and calculate different types of straight lines and angles
- Calculate the interior angles of polygons
- Solve problems involving a variety of different types of triangles
- Calculate the area of a variety of different types of quadrilaterals
- Solve problems involving circles
- Calculate the areas and volumes of different solids
Laws of Exponents
Before we can do anything further with algebraic expressions, including multiplying or dividing monomials and polynomials, it’s critical that you know the laws of exponents. Of course, you could probably get away without knowing these laws formally, but then you wouldn’t have a strong foundation. A big part of your studies is being able to communicate your findings, both on paper and in speech. Thus, knowing the terminology will help tremendously.
We’ll use the laws of exponents mainly to simplify expressions, to make them easier to work with in later computations, such as solving equations containing exponents. The easiest of these laws to grasp are the zero exponent rule and negative exponent rule. The video below will explain what to do when you encounter zero and negative exponents.
The other exponent laws you will encounter are summarized underneath:
(notice how the exponent 3 and n are not like terms so we leave it as 3 + n.
(notice how the exponents 5n and 2n are like terms, so we subtract the coefficients only).
Power of a power rule:
(Students will commonly mistaken the power with multiplication, for example, multiply the exponent 3 by the base 3 instead of 3 × 3 × 3 = 27)
A more thorough explanation of these laws are provided in the video:
Students of all math backgrounds make this common mistake. Remember, you can only distribute the exponent n if what’s inside the brackets is a monomial; x and y are two separate terms, hence a binomial. You could distribute the n in the following cases:
In the lesson to come, you will learn how to handle expressions like (x + y)² via a technique called expanding. For a list of other common math errors, watch this link.
Now it’s time to put your knowledge of exponents to the test. The video below shows three complicated examples that require you use several of the exponent laws to simplify a single expression.