1. Barger M. Gilbert R. Poth R. &Little R.(2006).Essential element examples of elementary engineering in elementary education. Paper presented at the ASEE Annual Conference & Exposition Chicago IL. Retrieved fromhttp://peer.asee.org/676
2. Berrett J.(2006).Engineering and technology in the elementary school. Paper presented at the ASEE Annual Conference & Exposition Chicago IL. Retrieved fromhttps://peer.asee.org/449
3. Preliminary considerations regarding use of digital fabrication to incorporate engineering design principles in elementary mathematics education;Berry R. Q.;Contemporary Issues in Technology and Teacher Education,2010
4. Progress on implementing inquiry in North Carolina: Nearly 1000 elementary, middle and high school science teacher weigh in;Blanchard M. R.;Science Educator,2013
5. A Construct Validation Study of the Fennema-Sherman Mathematics Attitudes Scales