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The PhET Blog
Physics Education Technology - University of Colorado, Boulder

Got PhET (Swag)? Visit our new CafePress Store!

Ever wanted a #PhETsims t-shirt or coffee mug?
Visit where you’ll find a variety of PhET gear, including mugs, t-shirts, iPad accessories, etc.
All proceeds go to helping us make more great #HTML5 sims! Support PhET today and help spread the word!


Aug 6


Have You Seen Our New Video Primers for Teachers?

Teacher Video Primer

We’ve added new teacher video primers to many of our HTML5 sims, and will have more on the way this fall! These video primers give a visual walkthrough of the features and common uses of a sim, as well as helpful information for using the sim to its fullest.

Sign in to our website today to start taking advantage of this new teacher resource! You’ll have to complete a new short registration process (less than two minutes!) to access the many new enhanced teacher support resources, including video primers, teacher-submitted activities, and commenting on activities.


Jul 31


Make Up Some Drinks with Concentration

Make up some summer drinks and test the concentration with our Concentration sim!

PhET Interactive Simulations's photo.


Jul 23


Next-Generation PhET Sims with Assessment Features

We’ve been working hard on the Next-Generation PhET Sims. Our new partner, metacog, Inc., is unlocking the power of these enhanced sims, by linking up PhET’s emerging line of interoperable simulations with metacog deep-learning analytics services. With PhET plus metacog, you can capture student sim interactions, and gain insight on how students approach learning challenges with on-demand playback, automated rubric-based scoring, and real-time visualization capabilities.

For more information, visit


Jul 16


Free AAPT eMentoring Webinar with Trish Loeblein: Monday, July 13, 2015

Join Trish Loeblein Monday, July 13, 2015 8:00 PM EDT during a free webinar for the AAPT eMentoring program. Any one is welcome to attend. The AAPT eMentoring program is designed to connect high-school physics educators who desire additional guidance with experienced high-school physics educators. It is a free service that will enable colleagues to connect and learn regionally and nationally.

Join WebEx meeting:
Meeting number: 730 348 181
Meeting password: aapt

Note: You will be prompted to enter your name and an e-mail. You probably will not need to enter any meeting number or password, but they are provided for your reference.


Jul 10


29 HTML5 Sims and More Over the Summer…

We are busy working this summer to have more HTML5 sims ready for the 2015-2016 school year, as well as many other improvements to our website and teacher support and development.

Enjoy the summer! And, keep up-to-date with the latest at PhET on our social media sites including PhET’s BlogFacebook, Twitter and Pinterest.


Jul 7


Come See Us at ISTE in Philadelphia, June 28-July 1


We’re going to be at ISTE 2015 in Philadelphia, PA June 28-July 1. Come by our Booth #147 and see the latest HTML5 PhET simulations and the exciting developments coming up in 2015-2016.


Jun 25


PhET Simulations for Learning the Physics of Music


University of Colorado Boulder Prof. Ed Kinney uses PhET’s Wave on a String to teach principles of sound in his popular physics course, Sound and Waves. In the course, students learn what happens to the waves as they move through the air from a speaker or musical instrument into the ear and vibrate the parts of the inner ear. Kinney says that PhET sims such as Wave on a String show changes and movement of sound through time better than a still image: “There’s not a still picture in a book that you can get across what is happening in real time when sound waves come into your ear.  Still pictures don’t convey the understanding.”

Read more here:


Jun 18


Please Send Us Your PhET Stories


Have an inspirational PhET story? Has PhET changed how you teach? How your students learn? Inspired a student’s interest in STEM?

We are looking for a few personal stories to share with people around the world to capture how PhET simulations impact you or your students. Help us by filling out this short questionnaire. If your story is selected, we’ll contact you for more information, and feature you in our newsletters and blogs.

We look forward to hearing from you.

Share your story here:


Jun 9


Thanks for Choosing PhET as the Public Choice in the NSF Video Showcase

NSF Video Showcase

Thanks to all who voted!

PhET received all 3 awards in the NSF 2015 Teaching and Learning Video Showcase: Presenters’ choice, Facilitators’ choice, and Public choice.

We couldn’t have won without you!



Jun 2