telling the different types of teeth apart

can anyone help me to find the easiet way to learn how to tell the different types of teeth on a dental assistant test i have upcoming. the teacher is going to give us loose teeth and we are going to have to name and label them for grades. i need some help differentiating between maxillary molars 1, 2, and 3 plus maxillary premolars and canines and incisors of the mandibular of these teeth too. please help!!!!