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Students will use a PhET Interactive Simulation to understand the definitions, similarities and differences of elements, ions and isotopes. Then students will explore the Science News journalism archive to find current science research examples that apply these concepts.

These questions, based on the Science News article “Radioactive cloud traced to Russia,” ask students to identify a series of events and list and evaluate evidence.

Students will test insects' nutrient compositions and compare that data with similar data from conventional snack foods.

These discussion prompts connect concepts including energy, competition, adaptation, speciation, natural selection and chemical and physical changes to a real-world example.

Students will answer questions based on the Science News article "Hermit crabs are drawn to the dead."

Students will learn how interactions among the protons and neutrons in the atomic nucleus affect the properties and stability of chemical elements, and how these properties could inform the creation of future elements.

After thinking through concepts related to processes in the Earth's core, students will use these prompts to create a diagram of the geodynamo.

These discussion prompts explore volcanic explosivity and collapse, the ecosystem and health effects of eruptions and how to keep people safe during natural disasters.

This guide reviews the history and development of the periodic table and explores the periodic table as a scientific model.

After watching videos about the periodic table, students will identify general patterns in the table.

These discussion prompts encourage students to think about the principles and purposes of scientific models in all areas of science and engineering.

Students will answer questions based on the Science News article "The periodic table turns 150."