The Periodic Table of Elements is a valuable resource for chemists and all kinds of STEM professionals. However, it can be initially overwhelming and intimidating to some students. This hands-on lesson introduces abstract concepts in the periodic table through a tangible experience with simple toys and household objects. Students collaborate and…

Nebraska is committed to pursuing a new vision for science education based on "A Framework for K-12 Science Education" (NRC, 2012), that advocates for rigorous, high-quality science education for all students. Following an ambitious four year timeline, Nebraska is working to develop new assessments aligned to and designed for these…

This article reports on a new device, called a geyser guide, that allows for quantitative measurements of both bubble sizes and kinetics of foam production in the so-called Diet Coke and Mentos experiment. The device is easily constructed, is made using readily available materials, and allows the experiment to be carried out indoors with no mess.…

In this research, structural equation modeling and TIMSS data were employed to examine the impact of school belonging on math achievement among secondary students in Japan, Korea, and the United States, with a focus on the roles of math attitude and disorderly behavior. Utilizing SmartPLS 4.0, the study delved into the reliability and validity of…

This paper examines the affordances of physical objects (e.g. apparatus, models, manipulatives) as they were used by teachers and students to make meaning in coordination with their speech and gestures. Despite the pervasive use of physical objects as material and tactile resources in hands-on investigations or demonstrations, there have been few…

The low-stakes character of international large-scale educational assessments implies that a participating student might at times provide unrelated answers as if s/he was not even reading the items and choosing a response option randomly throughout. Depending on the severity of this invalid response behavior, interpretations of the assessment…

Classical automated test assembly (ATA) methods assume fixed and known coefficients for the constraints and the objective function. This hypothesis is not true for the estimates of item response theory parameters, which are crucial elements in test assembly classical models. To account for uncertainty in ATA, we propose a chance-constrained…

Inspired by the positive impact of serious games on science understanding and motivated by personal interests in scientific outreach, we developed "Bacttle," an easy-to-play microbiology board game with adaptive difficulty, targeting any player from 7 years old onward. Bacttle addresses both the lay public and teachers for use in…

Natural science subjects have always been the most challenging for students in schools and universities. While the pandemic brought about a lot of new challenges, it also gave academics the chance to test out evaluation methodologies they had previously thought about but hadn't used in a relatively low-risk setting. The programmed learning…

In this systematic review, a series of didactic proposals and experiences that have been developed over recent years in formal education are presented with the common purpose of ensuring that students with special educational needs learn science. Initially, only 54 publications on the topic were identified, which underlines the scarce research…

This study analyzed the responses of Korean students to interest, confidence, value, and instructional clarity in science and mathematics. To achieve this, the raw data of the recent student survey of TIMSS were analyzed. A one-way ANOVA was performed, and a post hoc test was performed. Additionally, a cohort analysis was performed to determine…

As we move further into the digital age, the acquisition of digital literacy (DL) and computational thinking (CT) skills is emerging internationally as an essential goal for students in contemporary school curricula. As the world becomes more uncertain and volatile due to impacts of artificial intelligence (AI), international unrest, climate…

The pervasiveness of Computer Science (CS) in today's digital society and the extensive use of computational methods in other sciences call for its introduction in the school curriculum. Hence, Computer Science Education is becoming more and more relevant. In CS K-12 education, computational thinking (CT) is one of the abused buzzwords: different…

In this article, the author describes the impact of the Great Science Share for Schools (GSSfS). This annual campaign has already engaged over 100,000 pupils since its start in 2016. With 2019 seeing a record-breaking 63,614 pupils registered across 483 events in 11 countries, the forecast for 2020 is looking positive. Set up by the Science &…

The National Survey of Science and Mathematics Education (NSSME) has provided periodic snapshots of K-12 science instruction in the United States for over 40 years. Study topics include teacher background and beliefs, professional learning opportunities, course offerings, instructional objectives and activities, resources for instruction, and…