Lessons on integer basics (pre-algebra/7th grade math)

Here's a collection of 7 video lessons of mine on the basics of integer arithmetic, meant for pre-algebra or 7th grade math:

Click the image to access a Youtube playlist for those 7 videos.

It contains the following individual video lessons, which you can also access individually (on my site):

• Basics of integers
• Review of adding integers: counters, number line, different signs, rules
• How to turn a subtraction of integers into addition — and WHY it works
• The rules for multiplying integers — and WHY they work (incl. negative times negative and exponents)
• Division of Integers - basic lesson for pre-algebra/7th grade math
• Integers lesson: solved examples, part 1 and part 2 (2 videos)