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一种便于普及推广，能够改善教学环境的新式教学用具——“绿色环保黑板”由开封市经济建设发展中心最新开发研制成功。 “绿色环保黑板”选用国家教委指定的亚光黑绿色为基准材料，形成的是一种价格低，质量高使用方便的环保型板书工具。它仍然使用一般粉笔，不但符合正常书写
A kind of new teaching instrument that is convenient for popularization and popularization and can improve the teaching environment - “Green Green Blackboard” was successfully developed by Kaifeng Economic Development Center. “Green green blackboard” selected by the State Education Commission matt black and green as the reference material, the formation of a low price, high quality and easy-to-use environmental protection board tools. It still uses normal chalk, not only in line with normal writing