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Free-fallin’

Students will determine if an object's composition and the height at which can object is dropped affects its gravitational acceleration.

When science and gravity meet

These discussion prompts encourage students to explore concepts related to gravity and how scientists measure it.

The equivalence principle in the archive

Use this short section to explore and compare other articles about measurements of the equivalence principle as reported by Science News since 1924.

Testing the equivalence principle

Students will answer questions based on the Science News article "Galileo experiment re-created in space."

SN 2017 Year in Review

This guide reviews the Top 10 scientific discoveries from 2017, as reported by Science News, with a focus on key concepts covered across scientific disciplines.

Boosting your background knowledge

These discussion prompts help students gain a better understanding of key vocabulary and concepts covered in the Top 10 articles of 2017.

Tracking the latest developments

Students will compare and contrast one of the Top 10 stories of 2017 with an earlier related article from the Science News archive.

Analyzing a top article

Students will read and summarize one of the Top 10 stories of 2017, as reported by Science News.

Mosses Tell Story of Retreating Ice

This guide connects the radioactive carbon-14 dating of newly exposed mosses in the Arctic to the bigger story of climate change.

Exploring half-life

Students will simulate the exponential radioactive decay and half-life of carbon-14 with pennies and a food coloring/bleach chemical reaction.

Making carbon connections

These discussion prompts cover the basics of radioactive decay and carbon-14 dating, as well as concepts related to climate change.

Neutron Star Crash Seen for First Time

This guide explores the recent discovery of a neutron star collision and encourages students to make connections to stellar evolution, gravitational waves and fusion reactions.