howtosmile —the best science fun anywhere, any time, any age!

Find and DO fun hands-on science, math, engineering and technology (STEM) activities created by the country’s top science centers and out-of-school educators. Explore for FREE the entire howtosmile collection of over 3,500 activities, games, experiments, and more. Search the whole collection by word—like sound or planet; by topic—like Cooking, Chemistry, or Climate; by cost to do the activity—from free to over $20; and by age—from 4 to adult. Read the howtosmile blog for fresh ideas and approaches, plus profiles of out-of-school educators who make science learning cool and exciting, whether they teach in a museum, classroom, an afterschool program, or a kitchen at home. Discover your new favorite hands-on activities to do with your friends, family, or students. Get inspired!

Funded by the National Science Foundation, the Camille & Henry Dreyfus Foundation, and Oracle. Brought to you by the Lawrence Hall of Science, University of California, Berkeley.

What’s New

Version 1.3

This app has been updated by Apple to display the Apple Watch app icon.

-updated so app is compatible with database changes

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

SAR123123 ,

Wonderful app!

Great ideas for classroom projects. Many, many subject areas included. Really nice filtering to find just what you need. I'm sending this link to all my teacher friends.

Hellojennnn ,


Good information ! Simple design.

Sarabellum80 ,

Awesome science app

I got this app to search for cool experiments for Girl Scouts. This app is incredible!

App Privacy

The developer, The Lawrence Hall of Science, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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