Effective professional development that influences teachers’ classroom practices starts with what teachers know, understand, and do in their classroom. The Next Generation Science Standards (NGSS) challenge teachers to make changes to their classroom; to help teachers make these changes, it is necessary to know what they are doing in their classrooms just prior to NGSS adoption. An online survey was distributed to high school chemistry teachers to understand their teaching practices before NGSS was adopted as state standards. This article presents the findings of the survey in terms of the chemistry content, science and engineering practices, and engineering content currently taught in chemistry. Gaps in the current teaching practices as they relate to the standards at the time of the study and NGSS are discussed, which show a challenge for the transformation of science education, which the implementation of NGSS hopes to achieve. Implications for professional development are included.

中文翻译：

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就在采用下一代科学标准之前，高中化学教师的实践

影响教师课堂实践的有效专业发展始于教师在课堂上的知识、理解和行为。下一代科学标准 (NGSS) 要求教师改变课堂；为了帮助教师做出这些改变，有必要在采用 NGSS 之前了解他们在课堂上所做的事情。在 NGSS 被采纳为国家标准之前，一项在线调查已分发给高中化学教师，以了解他们的教学实践。本文从化学内容、科学和工程实践以及目前化学教授的工程内容方面介绍了调查的结果。讨论了当前教学实践中与研究时的标准和 NGSS 相关的差距，这对科学教育的转型提出了挑战，NGSS的实施希望实现这一目标。包括对专业发展的影响。