One of the most challenging aspects of teaching introductory science courses is that many students, expecting to be spoon-fed "the facts", fail to think critically and begin to lose interest. For too many, science seems like some imperturbable monument built by dowdy and eccentric geniuses. ... Students, particularly those who find few role models around them or at the front of the class, may become intimidated. ... Peer Instruction in astronomy. ... Back to Paul Green's HomePage . ...