Environmental components, including soil, water, air, and biodiversity, are vital for maintaining the balance of the ecosystem. However, environmental pollution is one of the most significant threats to these balances. With environmental pollution, the balance of ecosystems is disrupted, and the food chain is negatively affected. The food chain,…

Recently, the importance of statistical literacy has been stressed, and three central concepts in statistical literacy are the measures of central tendency: mean, median, and mode. This study explores aspects of statistical literacy expressed by 12-13-year-old students, focusing on mean, median, and mode. Their responses were analysed using a…

The paper presents findings from a study that examined, through the lens of the Image Having layer of the Pirie-Kieren model, the qualitative characteristics of the images that different children formed when engaging with eight, novel partitive quotient tasks. The Image Having layer is the first point of abstraction within the Pirie-Kieren model.…

Purpose: This paper aims to introduce a novel AI learning progression for upper-elementary students and aligns assessment items across levels of each construct to gather evidence of understanding. It also validates this quantitative measure by examining these items as two subscales for psychometric properties using the Rasch model.…

A significant body of scholarship in Physics Education Research (PER) has documented that students have intuitive knowledge resources that they use to make sense of the physical world. Similarly, for physicists, symmetry is fundamental to making sense of the universe. In this dissertation, I explore students' intuitive resources related to…

This article describes how the authors began developing human rights curriculum for, and then teaching, a middle grades book club unit using books with lesbian, gay, bisexual, transgender, queer, intersex, and asexual (LGBTQIA)+ content in an eighth-grade English class. The article highlights how picture books with book clubs can be used to render…

Seeds of Algebraic Thinking comes from the Knowledge in Pieces (KiP) perspective of learning. KiP is a systems approach to learning that stems from the constructivist idea that people learn by building on prior knowledge. As people experience the world, they acquire small, sub-conceptual knowledge elements. When people engage in a particular…

This study investigated children's knowledge of the addition of fractions with unlike denominators. It focussed on the strategies used by children to add fractions with unlike denominators. A cross-sectional survey of Grade 8 children in schools in two districts in Ghana was used. A test on the addition of fractions with unlike denominators was…

When learning about fractions, teaching usually follows certain topics -- e.g. part of the whole, fraction equivalence, and size comparison. Not yet answered is whether students' conceptual and procedural knowledge of fractions is coherent between those topics. To answer this question, we performed a latent profile analysis of data from N = 1005…

Students with learning disabilities deserve high-quality science instruction that supports them in constructing scientific explanations as a means toward building their science content knowledge. We examined written scientific explanations of 66 middle-school students with learning disabilities from rural Kansas school districts, comparing them…

The context surrounding today's college-going youth is different from when their parents pursued higher education in the late 1980s to early 2000s. I sought to understand how these parents, now as adults with children on the doorstep of their own college-going process, form knowledge about 21st century college-going and what sources these parents…

Recent reform initiatives in STEM disciplines inspired the development and implementation of integrated STEM approaches to science teaching and learning. Integrated STEM as an approach to science teaching and learning leverages engineering principles and practices to situate learning in an authentic and meaningful science learning environment.…

In the body of knowledge in mathematics education research, fractions are one of the researchers' concerns. The reason is because fractions are very difficult for students to understand. This study explores elementary school students' knowledge and obstacles in dealing with the multiplication of fractions. This study employs descriptive…

The microscopic composition of substances is a piece of essential but abstract knowledge in chemistry. Junior high school students may experience difficulty in mental representation when learning micro concepts, which leads to problems such as unsatisfactory academic performance and low learning motivation. Augmented reality (AR) is an optimal…

Adopting a pretest-posttest experimental design with repeated measures, this study examined the effects of three types of game-based learning supports in the form of modeling on knowledge development that contributed to successful math problem solving and students' perceived game flow. Forty-one sixth-grade students participated in the study and…