Here is another presentation that I hope helps.
How to use the presentation
When you open it, just:
click on 'Slide Show' at the top,
then click 'From Begining'
click space bar or the right arrow button to more through each step
click left arrow button to go back one step.
I suggest you copy it onto a sheet and follow the steps.
Have a look at one of the other slide shows and work sheet (with answer sheet)