Fractions
Multiply & Divide Negative Fractions (multdivnegfract.mp4) (for students who have learned about negative numbers)
Multiplying Fractions Part 2
Multiplying Fractions Part 1
This next one is a good video about mixed numbers and improper fractions uploaded by someone else. It's very visual.
How to Write a Whole Number as a Fraction (which might be useful if you need to subtract a fraction from a whole number)
Mixed Numbers and Improper Fractions - defines proper fractions, improper fractions, mixed numbers; show how write mixed numbers as improper fractions and vice versa, showing visual models as well as methods.
Meaning of a Fraction and Equivalent Fractions
http://www.youtube.com/watch?v=87DiYdRXZDI
Simplifying and Reducing fractions - part 1
http://www.youtube.com/watch?v=eAzfN0o3CgY
Simplifying and Reducing fractions - part 2
There are a variety of methods you can use to add and subtract fractions that have unlike denominators. The following videos show some different methods.
Adding Fractions that have unlike denominators - part 1
http://www.youtube.com/watch?v=89eHMYsw8MU
Adding Fractions that have unlike denominators - part 2
http://www.youtube.com/watch?v=N-TEyv7VNgY
Subtracting Fractions - part 1
Most of these have a common denominator.
http://www.youtube.com/watch?v=mTl-AeaL_aQ
Subtracting Fractions (unlike denominator) - part 2
http://www.youtube.com/watch?v=OwLW1XUBMqQ
Add Negative Fractions that have Unlike Denominators (addnegunlikeden.mp4)
(for students who have learned about negative numbers)
Add & Subtract Mixed numbers that are negative and have an unlike denominator (addsubmixneg.mp4)
(for students who have learned about negative numbers)
Subtracting Fractions and Mixed Numbers from a whole number
http://www.youtube.com/watch?v=ZpdTfe30N1s
Credit to Paul McGuire for coming up with "The Jealousy Method" below. His video is at https://youtu.be/pELxsM1L764
Add and Subtract Fractions that are negative and have a common denominator (addsubnegfraccomden.mp4)
(for students who have learned about negative numbers)
Subtract Fractions that have a Common Denominator (subcomdenfrac.mp4)
Adding Fractions that have a common denominator - part 2; adding mixed numbers
http://www.youtube.com/watch?v=MBZrYacUDyc
Add mixed numbers that are negative and have a common denominator (addnegmixcomden.mp4)
(for students who have learned about negative numbers)
Subtract mixed numbers that are negative and have a common denominators (subnegmixcomden.mp4)
(for students who have learned about negative numbers)
Adding Fractions that have a common denominator - part 1
Dividing Fractions
Adding Fractions using the Jealousy Method - part 1
http://www.youtube.com/watch?v=ZRERjEtD3Vg
Adding Fractions using the Jealousy Method - part 2
http://www.youtube.com/watch?v=azcxej39UwQ
Adding and Subtracting Two Fractions using an easy formula