| With the deepening of the new curriculum reform, teaching concepts and methods in the field of the chemistry classroom teaching becomes more rich and perfect, showing a good state of health development. However, under the new situation, traditional forms of chemistry homework and evaluation tools are still dominant, homework ideas, forms, contents and evaluate development are behind the current education reform process, not adapted to the concept of new curriculum. Homework can effective replenish and extend classroom, shouldering the "second class" teaching mission, should not become the blind spot of new curriculum reform. Therefore, in order to realize problems and deficiencies of the current chemistry homework, use advanced teaching philosophy, targeted innovations to improve the current chemistry assignment, so now we try to research the high school chemistry homework, using the portfolio assessment way, under the TBL theory.This article mainly uses the research method include literature review, questionnaire, interview and experimental. Research survey results show that current chemistry homework structure and layout is not reasonable, and the chemistry homework isn’t concerned about students, the implementation and assessment of the chemistry homework is monotony and students always be weak in manage the own chemistry homework. Combined with the problems and shortcomings of the current chemistry homework, proposed a five elements of the new chemistry homework, according to the different type of knowledge design targeted chemistry homework, and do an experimental study on the design of new homework cases.The results of the experimental study show that the new homework cases can improve the polarization of students’ chemistry scores in the experimental class, improve students’ enthusiasm for the completion of chemical homework, Helps students formed extracurricular cooperative, exploration learning consciousness and the ability to solve the chemical problems. |
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