Click on the following links. Please note these will open in a new window.
Chen, Y.S., Kao, T.C. and Sheu, J.P. (2005) Realizing Outdoor Independent Learning with a Butterfly-Watching Mobile Learning System. Journal of Educational Computing Research, 33(4), 395-417.
Hobbs, L.K. (2015) Play-Based Science Learning Activities. Engaging Adults and Children With Informal Science Learning for Preschoolers.