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This guide explores a variety of sugars and how they are modified in the body -- as well as how scientists follow those modifications.

Students will learn more about the enzymatic modification of sugars through hydrolyzing sucrose and to build molecular models of fructose, glucose, sucrose and a common artificial sweetener, sucralose.

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."

This guide explores what it means to be a dinosaur, and features a classroom activity focused on real fossils.

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.

Students will explore how rising carbon dioxide is threatening a lake food web, and will measure how the environment affects the heart rate of water fleas.

In this activity, students will measure the effect of environmental conditions on the heart rate of water fleas.