Science is the activity of studying the natural world in various ways to construct theories and models to explain phenomena. Windschitl et al. reported that model-based inquiry includes the connection between observable aspects of the target phenomenon and conjectured underlying causal processes. In addition, they insisted that learners are…

Discovering concepts through observation, exploration, and constructing scientific explanations of phenomena is best practice in science education. Instead of following lab procedures to verify a known answer or solution, involve students in the work of science. Begin by presenting a phenomenon to engage students in scientific inquiry and uncover…

The nature and cause of the phases of the moon are widely misunderstood. Perhaps the problem is a general decline in scientific literacy, or maybe it is the loss of direct and regular observation of the moon in society generally. Many people do not see the moon as a half-illuminated sphere. Adults are often surprised to realize that the moon can…

The planet Mercury transited the face of the Sun in a rare spectacle on 11 November 2019. It was an awe-inspiring moment for 300 students from Kwabenya Community High School and Ghana Atomic Energy Commission Basic School in Ghana to see this wonder of the cosmos. Celestron Power Seeker 60 mm diameter telescopes were used to project the Sun's…

Common objects are made of materials that have obvious physical features which, although readily observable, may be overlooked by children. Helping young children to notice characteristic features -- scientifically referred to as properties -- equips them to discern common and distinct (diagnostic) features. Once children begin to recognise…

Recently, the physics education community has taken a keen interest in modernising physics education. However, while topics in modern physics have great potential to engage students, these topics are abstract and hard-to-visualise. Therefore, many students hold mistaken pictures and misconceptions, which can impede learning. In this article, we…

Aldol chemistry is highlighted in many introductory organic chemistry laboratory experiments because it provides synthesis, mechanism, and experimental challenges for students. In the experiment described here, students synthesize dibenzalacetone derivatives by crossed aldol condensation, observe reaction rates using a semiquantitative rubric, and…

Newton's cradle is a well-known physics toy that is commonly used by teachers to demonstrate conservation laws in mechanics. It can also be used to investigate the physics of colliding objects, by recording motion of the balls on video film. Various experiments are described using 3-ball and 5-ball cradles, showing how different types of collision…

Observing teaching with a practiced, professional eye can yield valuable insights into the specific learning opportunities that students are (or are not) provided. However, recent policy initiatives have emphasized using formulaic rubrics and checklists to rate teacher behaviors and evaluate their use of particular instructional moves. Rather than…

For more than 30 years, Albert A. Bartlett published "Thermal patterns in the snow" in this journal. These are patterns produced by heat sources underneath the snow. Bartlett's articles encouraged me to pay attention to patterns in snow and to understanding them. At winter's end the last snow becomes dirty and is heaped into piles. This…

In this article the authors describe a model that starts from the basics of the OWL (observe, wonder, learn) large-group discussion strategy then moves onto new experiences that serve as the jumping off point for student-generated questions and investigations. The OWL version of a KWL (Know-Want to Know-Learn) process becomes a path to language…

Research shows that energy is a concept that is difficult to understand despite different teaching approaches existing. One of the problems is seen in its rather abstract definition. In contrast, we present an approach that activates students' everyday life experiences and uses these to develop a scientific understanding by introducing energy as a…

The NASA public archives present a vast resource of authentic satellite data that research astronomers have tapped into for decades. Recently, the same data analysis tools used by professional astronomers have been adapted into a browser-based interface called JS9 for easy use by any interested student. Tutorials and classroom-ready activities…

One of the challenges leaders face is how to help teachers examine their classroom practice. The use of video technology as a tool for teacher self-reflection, peer collaboration, and coaching has been gaining in popularity for just this purpose. In this article, the authors share how teachers benefit from using a Lesson Analysis Protocol to…

This article describes the implementation of an activity with a Predict-Observe-Explain (POE) learning cycle to teach the concepts of velocity and acceleration to physics students aged 17-19. The study indicates how the instructor enacted the activity and provides sample student responses and group discussions. The description includes an example…