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These discussion prompts focus on some of Stephen Hawking's most notable discoveries and ideas, as well as the disease that destroyed his nerve cells.

Students will work individually or in small groups to study different parts of the CDC website on opioids and summarize their findings for the class.

These discussion prompts cover the biology and chemistry of opioids and ask students to brainstorm strategies for preventing or reversing opioid addiction.

These questions ask students to search the Science News archive to expand their knowledge about opioid use and misuse.

Questions based on the Science News article "Fatal fix" ask students about the effects of opioids and to analyze a graph of overdose deaths.

These discussion prompts ask students about how isotopes can be used to label and track chemical molecules, and about sugars and the enzymes they interact with.

Students will search the Science News archive for other stories about the role of fructose.

Students will answer questions based on the Science News article "Small intestine is first stop for fructose."

In this activity, students will identify fossils using hand magnifiers or stereomicroscopes, determine which era each fossil is from and how the fossils might have formed over time.

These discussion prompts cover the major groups of dinosaurs and their time on Earth, as well as how we study them today.

From feathers to extinction, there's a lot to learn about dinosaurs in the Science News archive.

Students answer questions about how the definition of a dinosaur is changing with new scientific evidence.