One of the most challenging daily experiences of teaching young adolescents is helping them transition from Piaget's concrete to the formal operational stage of cognitive development during the middle school years. Students who have reached formal operations can design and test hypotheses, engage in deductive reasoning, use flexible thinking,…

Research involving cognitive modification and using intervention instruction in general prerequisite cognitive processes has shown that significant and long-term results are possible. Use of intervention instruction involving prerequisite data gathering skills with teachers has been successful in improving ability to use probing questions in…

Assesses the ability of tenth grade students (n=364) to acquire meanings of graphs that are frequently used in their biology textbooks. Indicates that the main source of failure to process information equally well from tables and graphs was not a lack of basic analytical skills but rather a lack of understanding of the relationship between…

One formal operational schema, hypothetical-deductive reasoning, is seen as most important to effective decisionmaking in planning and carrying out classroom lessons. While it is clear that formal thought schema are widely used in teaching, it is also understood that these reasoning schema are themselves dependent upon the more fundamental…

Two years after the end of a two-year intervention program set within the context of science learning intended to promote formal operational thinking, achievement of students (n=234) was tested by their results on British National examinations taken at age 16. Male experimental subjects achieved an average of 40 percent more grades of C or above…

Attempts to show that not only can density be taught to lower ability pupils but that by doing so, there is the possibility of assisting pupils to develop their reasoning powers. Lists teaching activities that help in this process. (CW)