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Physics Education Technology - University of Colorado, Boulder

Archive for the ‘HTML5 Sims ’ Category

PhET is an Open Source Project!

Did you know as an project all of our code is on ?


Jan 21


New HTML5 Bending Light Sim!


Play with the new HTML5 Bending Light sim and explore how light bends when it encounters an interface of two different indices of refraction. See how changing from air to water to glass changes the bending angle. Play with prisms of different shapes and make rainbows.



Dec 23


New HTML5 Arithmetic Sim


We are excited to have the HTML5 version of Arithmetic. Learn multiplication, division and factoring with this new sim!



Dec 18


Donate Today to PhET’s Annual Giving Campaign and Help Bring More Sims to HTML5


Dear PhET Friends, Users and Supporters,

A big ‘Thank You!’ to all of you who have already supported PhET during our registration process!

If you considered donating, but haven’t gotten to it yet, there’s still time! Remember, we rely on donations from people like you. Your donation will go to building more HTML5 sims. Every dollar really does help! So please pitch in and keep PhET free for millions of learners around the world.

Suggested donation amounts are:

  • $15 (if you use 1-4 sims)
  • $25 (if you use 5-14 sims)
  • $50+ (if you use 15 or more sims)

Make your gift today:

Or, if you’d like to donate specifically to bring Circuit Construction Kit to HTML5, donate here:

Thank you and Happy New Year!

Your PhET Team,
Dr. Kathy Perkins, Director and Dr. Kathy Dessau, Assistant Director
along with Aadish, Amanda, Amy H., Amy R., Argenta, Ariel, Arnab, Ben, Beth, Bryan, Bryce, Carl, Chris, David U., David W., Emily M., Emily R., Jesse, John, Jonathan, Liam, Linda, Mariah, Matt, Michael, Mike, Oliver O., Oliver N., Robert, Sam R., Steele, Stephanie, and Trish


Dec 15


Feeling Off Balance?

Balancing Act

Feeling off balance this holiday season? Try putting some balance back into life with the Balancing Act sim and teach about force, torque and rotation.


Dec 8


Hooke’s Law is Already in Five Languages…and Growing!

Hooke's Law Translations

Our volunteer translators have been busy and Hooke’s Law (just recently published) is already available in five languages. More to come…and more HTML5 simulations coming soon, too!


Nov 5


Dept. of Ed Launches #GoOpen Campaign to Support OER!

PhET as an Open Education Resource is excited about the US Department of Education’s new #GoOpen Campaign that encourages states, districts, schools, and teachers to use openly licensed educational resources.

For more info, see:


Oct 30


New HTML5 Translation of Molarity Sim

MolarityPeruvian Spanis

We are excited to bring the first (of many) translated #HTML5 simulations. Molarity in Peruvian Spanish is now available at We along with many volunteer translators worked hard over the summer to get the translation utility ready. Look for many more #HTML5 translated sims to come!


Oct 28


New #HTML5 Hooke’s Law Sim!

Hooke's Law

In the new ‪#‎HTML5‬ Hooke’s Law simulation, students can flexibly explore relationships between applied force, spring force, spring constant, and displacement as they stretch and compress springs. They can simultaneously compare two different springs, or compare systems of springs connected in series and parallel. On the Energy screen, students can investigate force and energy plots and discover the effect of the spring constant and displacement on the potential energy stored in the spring.


Oct 21


We Are Working on Accessibility


See how we are working on making PhET sims accessible in this slideshare.


Oct 16