Course Description:
Videos on pre-algebra. Should be ready for the "Algebra" playlist if you understand everything here.
Lectures:
Lecture 1 - Adding/Subtracting Negative Numbers
Adding and subtracting negative numbers.
Lecture 2 - Multiplying/Dividing Negative Numbers
Multiplying and dividing negative numbers.
Lecture 3 - Adding and Subtracting Fractions
How to add and subtract fractions.
Lecture 4 - Multiplying Fractions
Multiplying fractions.
Lecture 5 - Dividing Fractions
Dividing fractions.
Lecture 6 - Introduction to Order of Operations
Order of Operations.
Lecture 7 - More Complicated Order of Operations
More Complicated Order of Operations Example.
Lecture 8 - Level 1 Exponents
Basic Exponents.
Lecture 9 - Level 2 Exponents
Negative Exponents.
Lecture 10 - Level 3 Exponents
Fractional Exponents.
Lecture 11 - Negative Exponent Intuition
Intuition on why a^-b = 1/(a^b) (and why a^0 =1).
Lecture 12 - Exponent Rules Part 1
Introduction to Exponent Rules.
Lecture 13 - Exponent Rules Part 2
2 More Exponent Rules with an Introduction to Composite Problems.
Lecture 14 - Simplifying Radicals
Using Exponent Rules to Simplify Radicals or Square Roots.
Lecture 15 - Introduction to Logarithms
An Introduction to Logarithms.
Lecture 16 - Unit Conversion
Metric Unit Conversion.
Lecture 17 - Speed Translation
Translating Speed Units.
Lecture 18 - Introduction to Logarithm Properties
Introduction to the First Two Logarithm Properties.
Lecture 19 - Scientific Notation
Introduction to Scientific Notation.
Lecture 20 - Scientific Notation Examples
More Scientific Notation Examples.
Lecture 21 - Introduction to Ratios (New HD Version)
What a Ratio Is. Simple Ratio Problems.
Lecture 22 - Unit Conversion Example: Drug Dosage
Unit Conversion Example: Drug Dosage.
Source: http://academicearth.org/courses/pre-algebra
