Chapter 1 - Whole Numbers and the Four Operations
Chapter 2 - Adding and Subtracting Fractions
Relating Fractions to Division
Converting Improper Fractions to Mixed Numbers
Chapter 3 Videos
Cross Canceling Fractions (simplifying the fractions before multiplying to make the numbers smaller/easier to work with)
Changing an Improper Fraction to Mixed Numbers
Thinking Blocks has word problems using bar models that are useful.