1. The Global Race for STEM Skillshttp://www.obhe.ac.uk/newsletters/borderless_report_january_2013/global_race_for_stem skills
2. Is the U.S. Focusing too Much on STEM?https://www.theatlantic.com/education/archive/2014/12/is-the-us-focusing-too-much-on-stem/383353/
3. Education Week. When Did Science Education Become STEM?http://blogs.edweek.org/edweek/curriculum/2015/04/when_did_science_education_become_STEM.html
4. A proposed integrated STEM framework for contemporary teacher preparation;Burrows;Teach. Educ. Pract.,2015