At top, fifth grader Taylor Spencer learns about the hydrogen make-up of vinegar, club soda and ammonia with Manju Hingorani, assistant professor of molecular biology and biochemistry at Spencer Elementary School Nov. 10. (Photo by Olivia Drake) Posted 11/16/05 When 18 fifth graders from the Spencer School in Middletown came home on Nov. 10 and were asked, What did you do in school today? they had a few ready answers: We extracted DNA from wheat germ, checked hydrogen levels in household products and stripped-away pigments from M&M candies. Probably a little different from the responses parents had heard the day…