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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

At-Home Activities Team Stipends

by: darrell porcello | 2.3.2021

With support from the Institute of Museum and Library Services, the Children’s Creativity Museum and UC Berkeley’s Lawrence Hall of Science are updating to meet the growing needs of informal educators offering at-home STEM educational programming during the COVID-19 pandemic. The project will establish a network of 10 new partner museums to expand the howtosmile digital library, which provides high-quality STEM activities to an active community of informal educators through best practices in digital resource management-with almost 3,500 cataloged resources. The project is also updating the digital library's legacy cataloging system to reduce complexity and increase security.