An open-ended assignment to "make something" out of cardboard was a good fit for a half-day camp class of children in kindergarten, first, and second grades where the first goal was to have fun while learning. Given the opportunity to make something of their own design for their own purposes out of cardboard, the children persisted while…

PEOE (predict, explain, observe, explain) is a strategy that supports conceptual change (Dial et al. 2009). "Conceptual change" is a process through which students can change their understandings, ideas, or beliefs (diSessa 1993; Konicek-Moran and Keeley 2015). This style of lesson allows students to express their scientific ideas…