Using the Disciplinary Core Ideas and a research-based “citizen science” approach, science educators contributed their own test items, and helped to revise existing test items in order to address crucial issues such as difficulty, gender, and racial/ethnic bias that were present in the item analysis characteristics. We share the analysis and results of these efforts so that educators can assess their own test items to be more inclusive of all students’ understandings in one of the dimensions of the 3D-approach to learning. Learn what changes contributed to improvement of the item as well as what types of changes or revisions made the item worse than before. We also share results of field testing of these items in student classrooms and discuss the importance of incorporating students’ misconceptions into the response choices to capture their true understanding of science concepts as outlined in the DCIs.

TAKEAWAYS:
Learn to evaluate assessment questions that you use to assess students’ sensemaking of elements outlined in the NGSS DCIs. Are the questions free of bias, not too difficult, indicative of overall student performance? Do they include common misconceptions that students hold? Utilize a free resource.

SPEAKERS:
Philip Sadler (Center for Astrophysics | Harvard & Smithsonian: Cambridge, MA), Cynthia Crockett (Center for Astrophysics | Harvard & Smithsonian: Antrim, NH)

In this session, participants will experience part of an NGSS-aligned unit on wastewater testing and COVID-19. This six-lesson unit utilizing the 5E learning approach was developed through the collaboration of educators, engineers, scientists, medical doctors, and public health experts within an NIH-funded project. Attendees will participate in the fourth lesson of the sequence, entitled “H-Two-Poo.” Participants will first test the quality of different water samples to answer the driving question “how do you know if water is safe to use?” Participants will then learn about sources of wastewater, methods of wastewater management, and the development of a wastewater testing protocol to detect the presence of COVID-19. The experiences of high school students and teachers who have participated in the implementation of this phenomenon-based unit will be shared, including data from student surveys and handouts, along with photos of field trips to the community wastewater treatment facility.

TAKEAWAYS:
Attendees will utilize science and engineering practices to collect and analyze water quality data. They will further learn how science and engineering have been used to develop wastewater testing techniques that inform public health decisions in our communities.

SPEAKERS:
Sagan Goodpaster (University of Kentucky: Lexington, KY)