Exploring Light: Hands-on Activities and Strategies for Teachers

The Exploratorium is a twenty-first-century learning laboratory, an eye-opening, always-changing, playful place to explore and tinker. For more than forty years, we’ve built creative, thought-provoking exhibits, tools, programs, and experiences that ignite curiosity, encourage exploration, and lead to profound learning. We use the same tools and approaches to design compelling professional development programs for teachers ranging from novice to expert, elementary to high school, and formal and informal, in fields of science, math, and engineering. To date the Exploratorium has provided in-depth, multi-year programming to thousands of educators from over 450 school districts in 47 states and in many different countries.

Coursera是一家数字公司，提供由位于加利福尼亚州山景城的计算机教师Andrew Ng和达芙妮科勒斯坦福大学创建的大型开放式在线课程。

Coursera与顶尖大学和组织合作，在线提供一些课程，并提供许多科目的课程，包括：物理，工程，人文，医学，生物学，社会科学，数学，商业，计算机科学，数字营销，数据科学 和其他科目。