This video begins with teaching of percentage lesson. He is also teaching conversion of percentage to decimal and vise verse. This teaching is using advanced technology note pad when he goes on writing on pad that will display on screen. He is telling that percent 35% in decimal it is .35 and if decimal 2 it is 20% in percent. And he was teaching how to convert fraction to percent by taking one example 7/8 , to convert this first we have to divide 7 by 8 then we get answer .875 then to convert this fraction into percent its easy just shift decimal point tow times right then it will be 87.5%. There after he taught how to convert percent to fraction.