Progress in the molecular modeling using pointers for chemical education-Development of flexible angle modeling and application for natural environmental science education-

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We performed the development of new molecular modeling using socket and dimple method, which has been improving the pointer method. To reduce the pointer work, styrene foam ball having round dimples for sp^3 hybrid orbital, triangular dimples for sp^2 hybrid orbital and three orthogonal lines for d^2sp^3 hybrid orbital on its surface were developed. And the socket having rim and anchor was also developed to insert it in the styrene foam ball. Soft polyethylene pipes were used as chemical bonds. It became more easy to use molecular modeling in the class of science and chemistry using this new method. Using the new modeling, the simplified DNA molecular model was developed. The student can easily study the mechanism of the reproduction of DNA by handling this model.