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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.

These discussion prompts cover the pH scale, the solubility of gases, food webs and how organisms react to climate change.

These questions explore past articles about ocean acidification in the Science News archive.

Students will answer questions based on the Science News article "Rising CO2 threatens lake food webs" and an accompanying graph tracking pH.

This guide explores an increasingly ubiquitous technology: the smartphone. How do its sensors work, what data do they collect and how can we keep ourselves safe from its spying eyes?

In this two-part activity, students will complete a few simple light polarization exercises to model LCD technology and then demonstrate how a smartphone app analyzes and utilizes data to perform a specific function.

These discussion prompts ask students to describe how various smartphone sensors work, and analyze three graphs related to data gathered by such sensors.

Students will search the Science News archive for stories related to the powers and perils of smartphone use.

Students will answer questions about how smartphone apps could be used to spy on people and how such spying might be prevented.