Students often confuse the functional differences between motion "transmission" and "transformation" systems. Students find it difficult to conceptualize differences between the specific systems. In this article, the author describes a technology and engineering unit that incorporates problem-based learning (PBL) to assist…

Problem-based learning (PBL) fosters both content knowledge and content understanding, improves critical and process thinking skills, and promotes peer-to-peer learning, leadership, and teamwork (Hmelo-Silver 2004). Instructors support the PBL process by guiding students through activities that challenge their current knowledge and understanding…

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…

Groundwater contamination is a serious environmental problem, given that all living things depend on this essential resource. Groundwater represents less than 1% of all water found on Earth, but nearly 90% of the freshwater used comes from groundwater (USGS 2016). The problem-based activity described in this article actively engages students in…

What bird species live in your area? Which migrate and which stay year-round? How do bird populations change over time? Citizen science provides the essential tools to address these questions and more. With ever-growing databases such as Project FeederWatch and eBird, students can connect with people around the world as they make observations,…