If you're seeing this message, it means we're having trouble loading external resources on our website.
If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.
Unit 5: 2021 Challenge
About this unit
The 2021 Breakthrough Junior Challenge generated an impressive group of video submissions in the fields of math, life sciences, physics, and on topics related to the special category of COVID-19. We're excited the share the videos of the finalists and regional champions.