Figure 19.3 is an example of a behavioral-objective guide written for a fifth grade social studies class. Curriculum developers break their unit into the most important facts or skills that cover the subject. They write behavioral objectives for each fact or skill. Each behavioral objective is the basis for a sequence of activities and evaluation. The teacher who uses such a curriculum guide is expected to follow the sequence of activities and administer the evaluation. Recycling activities might be included in the guide for those students who do not pass the evaluation. Each behavioral -objective plan is tightly sequenced so that one objective is mastered before a student moves to the next. (For example, after identifying and spelling the original 13 American colonies, the next objective might be identifying and spelling those states that came into the Union from 1776 to 1810.)