• Roll over the different themes to view brief descriptions.
• Click a theme to get an introduction and start a theme “tour.”
• Click “Next” to proceed to the next stop on the theme “tour.”
• Click “Cancel” to return to normal control of the program.
• In a theme “tour,” you can perform experiments and watch videos. Taking an action that will diverge from the tour’s plan will bring up a dialog box asking you if you really wish
to continue, or instead cancel your action and return
