Lowell Observatory Camps for Kids (LOCKS): Archimedes' Principle
Learn to measure density and solve the mystery of the gold crown like Archimedes.

Safety Note: Adult supervision is required when measuring density in a bathtub.


LOCKS Science Challenge: 

Try one of our in-home science challenges for kids. Completed challenges can be submitted at any time, so disregard due dates in any of the videos. We want to see your projects when you are finished, so please send them to us!

How to Submit Your Project

Email to ScienceChallenge@lowell.edu


Visit the LOCKs Facebook page

Science Topics
4th Grade, 5th Grade, 6th Grade
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Lesson plan PDF.

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