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

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.

To better understand the life cycle of stars, students will estimate the conditions involved in stars and element formation.

These discussion prompts cover the principles of spectroscopy, stellar evolution and fusion reactions.

This guide describes how origami robots can perform various tasks while being driven by a solenoid, and then asks students to make their own simple solenoids.

Students will construct their own simple solenoids and conduct experiments to measure the solenoids' properties.

Students will calculate the angular momentum and density of the moon and consider the implications of the results for various theories of the moon's origin.

This guide explores scientists' ideas for how the Earth got its moon, and the evidence that supports those ideas. Students can even calculate relevant lunar properties for themselves.

Working in pairs, students will analyze a graph of data from one of the cancer experiments described in "Cancer's sweet cloak."

This guide covers research investigating how cancer cells can hide from the immune system with the help of cell-surface sugars, as well as related topics.