Analysis Of Cognitive Impairment On Eighth Grade Students' Learning Parallelogram

Based on the constructivism learning theory,Gagne's learning results classification theory,Piaget cognitive development theory,Ausubel's meaningful learning theory as the theoretical foundation,we research the cognitive impairment of Grade Eight in the parallelogram learning,and give specific teaching strategies and suggestions.Cognitive impairment exits in Grade Eight when the students learn parallelogram,mainly including lack of basic schema,speech and comprehension barrier,cognitive strategy barrier.Of the three,the cognitive impairment in speech and comprehension is the most serious,lack of basic schema is the least serious,cognitive strategy barrier is between the two.The basic schema has an positive influence on students' language comprehension ability and cognitive strategy.From the cognitive strategy,we can know the result of the students' learning.The student who with strong cognitive strategy is also has a good understanding of speech comprehension and has higher level of basic schema.Lack of learning initiative is one of the factors that cause the failure of learning parallelogram.The lack of basic schema directly affects the ability of students' logical reasoning ability.It also causes the cognitive strategy disorder.The lack of basic schema can also produce cognitive impairment of speech comprehension,and the graphical language in speech comprehension may be a contributing of cognitive strategy barrier.In the teaching of the parallelogram,Students should be allowed to explore,discover,summarize,sum up the formation process of the concept and theorem.Make full use of the students' subjective initiative,so that students can construct their knowledge actively and form systematic knowledge.Give students plenty of time to think,pay more attention to making a change,improve students' autonomous learning,independently analysis and problem-solving ability,improve students' geometric intuitive,logical reasoning ability.Do a good job in analysis,review before class,review the possible problems in advance.Strengthen the cultivation of students' self learning and reading ability,train students' thinking aloud.The teaching language should notice the specialized terminology and mandarin.Pay more attention to the mathematical character language,symbolic language,the graphic language of the mutual transformation of skill training,improve the mathematical language of the standard and language rigor.