The "Framework" (NRC 2012) and "Next Generation Science Standards" (NGSS Lead States 2013) require science teachers to think differently. Specifically, NGSS's performance expectations now require that three domains (disciplinary core ideas (DCI), crosscutting concepts (CCC), and scientific and engineering practices (SEP)) be…

A classroom discussion started after a student noticed three days of accumulated trash in the wastebasket and exclaimed, "Wow, look at the trash! If it keeps piling up like this, it will soon be everywhere!" His statement motivated the authors' class to research about the trash, or solid waste, we create and what can we do about it.…

Due to the student-centered nature of problem-based learning (PBL) and project-based science (PBS), it is easy for teachers "not" to provide students with adequate feedback or enough support to promote critical thinking. However, research has shown that PBL and PBS are most effective when appropriate learning goals are defined, embedded supports…