Math Interactive PPT needed for Mid School

I am looking for long term Interactive Math PowerPoints for Grades 4, 7, 8 and 9. They must be very interactive and student friendly. This will be a very long term assignment so I will be asking for a sample. My rate is $3 per PPT so if you plan on giving more than this PLEASE DO NOT BID as I do not want to waste both of our times

Please bid in the bid that "OK WITH SAMPLE" so I know that you have read it thoroughly.

Please bid for 5 PowerPoints