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  • New at-home activities collection | We have developed a new set of activity characteristics that will help caregivers and educators support at-home STEM learning. Check out the curated activity collection here!
  • Museums offering at-home activities | We are updating a list of museums that are sharing new online engagement resources during this challenging time—check it out here.
  • Read our update | We have been the one-stop location for STEM activities on the web for 10 years.  Read how we are continuing to help you reach learners with at-home resources during  this challenging time.
  • Explore our topic pages |  Not sure where to start searching? Try browsing activities organized by popular subjects and frameworks—like astronomy.
  • Our awards | We have been recognized by Homeschool Base,, the American Library Association, and the American Association of School Librarians.

Welcome to howtosmile

Search almost 3,500 of the very best STEM activities on the web. Find handpicked activities from your favorite science museums, public television stations, universities, and other educational organizations. All activities are available to anyone, free of charge. Start searching now and filter by age, material costs, and learning time to find exactly what you need for your educational program, class, or family.

After launching in 2010, and serving millions of web visitors, howtosmile has become the largest and longest running online collection of STEM activities for educators and learners from all over the world. Let us know what you think and send any suggestions for new resources by emailing us at

Curated Topic Pages

Latest Blog Post

Activity Extensions for the Moon Adventure Game from the NISE Network

by: Matt.Jorge | 11.4.2021

Have you ever wondered what challenges astronauts of the future will encounter when they live and work on the Moon? Thanks to NISE Network’s Moon Adventure Game, you can! The collaborative escape room-like adventure game is a fun and immersive way to learn first hand the dangers of long-term habitation on the Moon. This blog post is our way of helping educators currently using the game—or those planning to add the game to their museum programming—to extend the out-of-world experiences of learners.