Earth Science

Understanding Earth’s tectonic plate system dynamics is complicated though it is the central paradigm to explain transformations of Earth’s surface. The landforms and geodynamic events resulting from plates interacting are too massive to observe at scales of human experience. It is difficult for students to connect plate movements to geologic features like the Andes Mountains and geodynamic events like earthquakes. As such, the conventional teaching of plate tectonics rarely involves student-led systematic explorations.

Our planet’s surface is in constant motion. Large pieces of Earth’s crust and upper mantle, known as tectonic plates, continually move toward and away from each other at a rate of millimeters to centimeters each year. Over geologic time, their relative motions determine everything from the types of boundaries they form to the distribution of rocks and landforms on Earth’s surface and the location and frequency of earthquake and volcanic eruptions.

Pallant, A., Lord, T., Pryputniewicz, S., & McDonald, S. (2022). Models for developing explanations of earth's dynamic plate system. Science Scope, 45(4), 20-28.

High-quality science education is essential for students to become scientifically literate. Model-Evidence Link (MEL) diagrams and build-a-MEL (baMEL) diagrams are instructional scaffolds that create an opportunity for students to build scientific understanding through the evaluation of the connections between evidence and alternative explanations of a scientific phenomenon. The MELs and baMELs allow for a natural incorporation of three-dimensional learning that has been recommended by the Next Generation Science Standards to enhance students’ comprehension.

The origin of the Universe is something that people have pondered for thousands of years. As evidence has mounted, the Big Bang theory has become the consensus scientific model. Much of this same evidence refutes opposing theories such as the earlier Steady State model. The NGSS for high school includes the nature of and evidence for the Big Bang, providing a rich opportunity to explore—with the help of a scaffold—the connections between evidence and competing models about the origins of the Universe.

Bhattacharya, D., Chandler, M., Carroll-Steward, K., & Forbes, C.T. (2020). Using climate models to learn about global climate change. The Science Teacher, 88(1), 58-66.

Bhattacharya, D., Chandler, M., Carroll-Steward, K., & Forbes, C.T. (2020). Using climate models to learn about global climate change. The Science Teacher, 88(1), 58-66.

Developing understanding about the Earth’s climate and the phenomenon of global climate change (GCC) is essential for all students, our future citizens and decision-makers. Recent implementation of the Next Generation Science Standards (NGSS) has intensified the focus on teaching and learning of the Earth’s climate and GCC in formal learning environments. Concurrently, the empirical research associated with climate education has also increased.

Developing understanding about the Earth’s climate and the phenomenon of global climate change (GCC) is essential for all students, our future citizens and decision-makers. Recent implementation of the Next Generation Science Standards (NGSS) has intensified the focus on teaching and learning of the Earth’s climate and GCC in formal learning environments. Concurrently, the empirical research associated with climate education has also increased.

In this mixed method study, we analyse the effectiveness of two pedagogical approaches – one model-based and another non-model-based – for developing secondary students’ understanding of the phenomenon of increase in Earth’s average surface temperatures, a core dimension of global climate change (GCC). Building on past research on teaching and learning about Earth’s climate, we use an Evidence-Based Reasoning framework to assess student tasks and interviews from a 3-week, project-developed, model-based curriculum.