The "lessons" below could also be described as animations or even as slide shows. In fact, we are not exactly sure what to call them! They illustrate concepts and steps required to carry out different operations. They have audio commentary although they can be viewed with just the text. The lessons developed so far include six on fractions, three on percent, and one on long division.
The links below will open the lessons in a new window. There is a navigation bar at the bottom each lesson that will allow you to:
We would really like to hear what you think about these lessons. We will use what we learn to make them better.
#1: Introducing Fractions (2:42 min.) 

#2: Equivalent Fractions (3:41 min.) 

#3: Common Denominators (4:10 min.) 

#4: Adding and Subtracting Fractions (3:46 min.) 

#5: Simplifying Fractions (3:12 min.) 

#6: Mixed Numbers and Improper Fractions (4:12 min.) 
You will also find more textbased guidance on how to work with fractions here. There are also a number of fraction worksheets as well as some fraction games.
#1: Introduction 

#2: Calculating with Percent e.g. 40% of 150 is ? 

#3: Calculating with Percent e.g. 12 out of 20 is what % & 80 is 12% of ? 
You will find more here on calculating with percent. There are also a number of printable worksheets here that can be used for practice.
Long Division: Stepbystep 
There is a long division worksheet generator here that provides limitless questions to practice the steps shown in the minilesson above.