[This paper is part of the Focused Collection on Curriculum Development: Theory into Design.] A level of curricular design, called "design tactics," is identified to fill a gap in the research literature between the broad principles that guide curriculum development and the detailed writing of specific activities and lessons. The use of…

This case study examines how material resistance (limitations posed by the physical world) and graph interpretation intersected during a high school biology investigation using digital sensors. We use an extended episode from a small group to illustrate how, in an inquiry-based unit, measuring near the resolution limit of a sensor caused scaling…

Although studies have been published that examine the effectiveness of large federal scholarship programs for recruiting new science teachers, few studies have examined whether new teachers recruited by these programs are as well prepared as those who were not recruited and supported by these scholarships. In an effort to address the discrepancy…

This research summary accompanies the report "Final Report of the i3 Impact Study of Making Sense of SCIENCE, 2016-17 through 2017-18." Science education has experienced a significant transition over the last decade, catalyzed by a re-envisioning of what students should know and be able to do in science. That re-envisioning culminated in…

The annual National Collegiate Soils Contest (NCSC) has long been anecdotally recognized as a beneficial event for participating students to practice soil profile descriptions and landscape interpretations. The objective of this study was to quantify student learning outcomes and to identify how students' perspectives shifted over the course of…

In the spring of 2018 the Northern California/Nevada Section of the American Association of Physics Teachers was alerted to a local high school's plans to eliminate physics for the following school year. As part of the campaign to support the school's efforts to sustain physics in the following year, the physics offerings from the surrounding…

This paper describes a reading assignment that resulted in students completing 80-90% of the assigned reading in a content-heavy science course taught in a flipped format. Students reported almost unanimously that the assignment was valuable in helping them learn the material, and a majority reported that other professors should adopt a similar…

Contributions to conservation biology research are traditionally approached from an ecology and evolutionary biology perspective, but education research can be equally valuable. Population genetics research can inform management decision-making while education research can improve how we teach conservation. My dissertation tackles conservation…

Cross-connections between the sciences and mathematics are emphasized through the Next Generation Science Standards and the Common Core State Standards in the United States. One topic that is a common bridge between math and science is the concept of measurement and unit conversions in the metric/English system. This article uses a mixed-methods…

Existing accounts of student thinking about mechanical wave propagation and superposition emphasize that students sometimes treat wave pulses as objects, saying, for example, that pulses bounce off of one another when they meet. In this paper, we present a context in which students explicitly reason about pulses as not-objects, instead describing…

The purpose of this quantitative pretest-posttest quasi-experimental study was to examine the effect on student success rates in biology courses with laboratory components taken via distance education at a California community college. This study examined success rates for nine different courses, including 98 sections (2,299 students) taught only…

The NGSS Early Implementers Initiative was created to help eight California school districts and two charter management organizations, supported by WestEd's K-12 Alliance, implement the Next Generation Science Standards (NGSS). Many educational initiatives are funded for only a couple of years. This unique initiative spanned an extraordinary six…

This paper describes a method for determination of trihalomethanes (THMs) in drinking water via solid-phase microextraction (SPME) GC/MS as a means to develop and improve student understanding of the use of GC/MS for qualitative and quantitative analysis. In the classroom, students are introduced to SPME, GC/MS instrumentation, and the use of MS…

This longitudinal study examines elementary teachers' self-efficacy for science teaching in the years after professional development (PD) ended and during a subsequent 3-year period of follow-up support. Self-efficacy is important because teachers make decisions about classroom activities based, in part, on how confident they are in their…

This case study focuses on the implementation and analysis of critical algorithmic literacy (CAL) lessons in two grade 3/4 combination classes. The study involves one elementary school teacher and 36 students from a K-6 school in Southern California. By analyzing various data sources, I identified trends that could be helpful for future…