We continually improve our simulations, which in odd instances may prevent loading of elements. To resolve this issue, please exit the simulation and clear your browser cache by following the instructions from our supported browsers:
Once you have cleared your browser cache, please click on 'Restart from beginning'. Note: This will be registered as a new attempt.
If you continue to experience difficulties with the simulation, please contact our Support team with (1) your school email address, (2) the name of the simulation, (3) the browser you are using, (4) a screenshot of the issue in the lab, (5) the steps you take right before the issue happens and (6) a detailed description of the issue itself.