As well as the links below you will have
Tutorials On A Stick (see your teacher). This is just in case you are at school or cannot stream or connect to the internet.
Tutorials in your textbook are great too.
Links to Worksheets on the school portal (restricted to UNIS students due to copyrighting of material).
Use your textbook as well as the worksheets to practice these skills.

Skill
Online Tutorials
Games and Practice
Worksheets and Textbook Exercises
1
Operations with directed Numbers
http://mathtv.com/
From mathtrain
Mucho Math - YouTube
Mental Maths from mathsgames.com
More than integers, but good practice from MangaHighICE ICE Maybe
Kuta online worksheet - +
Kuta online worksheet / x
2
PEDMAS
Brightstorm.com PEDMAS
mathtrain.tv
BIDMAS Blaster from Mangahigh
mathplayground.com
mathsgames.com The Game of 24
Math.com PEDMAS
Kuta online worksheet
3
Combining Like Terms and Simplifying
MuchoMath YouTube Channel - Combining Like Terms Part One
MuchoMath YouTube Channel - Combining Like Terms Part Two
http://mathtv.com/ Go to simplifying Section D
http://mathtv.com/
BBC Postie Game
BBC needs shockwave installed
BIDMAS Blaster from Mangahigh
math.com Simplifying
Kuta online worksheet
Kuta online worksheet variable expressions
4
Distribute
Mr. Hamada explains how to distribute
http://mathtv.com/
algebasics.com - skills 1 to 4 tutorials and problems
Kuta online worksheet