Videos
Ex 5.2
This video explains the basic concepts of ratios

This video goes through how to simplify ratios and the importance of having the same units.

Ex 5.3
This video explains the basic ideas of simplifying ratios.

This video explains how to simplify ratios if they contain fractions or decimals.

This video explains how to simplify ratios if they contain mixed numbers.

Ex 5.4
This video explains the basic definition of a proportion as equivalent fractions

This video explains the meaning of proportion in the real world.

This video explains how we use the cross product to check if two fractions are in proportion

This video goes through two examples using proportions to find the solution.

This video explains the relationship between algebra and proportions.

Ex 5.5
This video explains how to
compare the size of ratios. 

Ex 5.6
This video goes through a nice, simple way of how to share a total amount according to a specific ratio.

This video goes through another way of solving sharing problems using diagrams to help. This is a very visual method.

This video goes through the same method as the previous one did using diagrams, but it shows you how to use this method without drawing diagrams if you don't need to.

This video explains how ratios can express the ratio of the part to the whole.

This video shows a third way for solving sharing problems by using the ratio of the part to the whole. In this method, the ratio is converted to its fraction form.

Ex 5.7
This video explains the concept of a rate and gives some real life examples
This video explains the unit rate strategy in calculating rates

This video explains how to work with rates and their units.

This video goes through an example of solving a rate problem.
