ects, he or she could start with objects that are all the same shape, but in different sizes. The concept of shape would be reinforced as independent of the concept of size. Only when the students comprehended the difference between shape and size would the teacher introduce an object of a different shape or size.
Emphasizing rules and the consequences of breaking those rules are very important in order for behavior modification techniques to work; of course, immediate, consistent, and fair reinforcement is also necessary. Telling students that they will be able to engage in a favorite activity if they perform a less well-liked activity to satisfactory completion will generate success. The new teacher should also let the class know who is control the first day. A new teacher must be firm and self-assured on the first day, or else a very good actor!
Developmental theorists such as Erickson and Piaget have had an influence on the field of education, because they speci
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