How can society or parents preventation children obesity?

i need 7 source cards and recerch cards 20 . in recerch cards must be there at least 4 quote and the rest are paraphres and summmary . my teacher will ask me about these cards .the page 9 will be the refrences and the page 10 will be outline . i do not want any information from net becouse my teacher will check. must be 4 books resours and one magazen or net