Be sure Squeak is installed successfully on your computer. It may take about 10 seconds for the project to load for a fast connection (up to 3 minutes for a slow modem connection). Wait until you see an orange flap at the lower left labeled Navigation. Click the flap to open and close it and access some neat tools. If you click Escape Browser, you will have more space. Click Browser Reentry to get back your Browser controls.
Sundial: Norbert has lost his watch and he needs to be able to tell the time of day so he doesn't miss any important appointments. The ancients could tell time using a sundial. In this activity, you will study sundials using measurement, plotting and analysis of data. Click on the SUNDIAL button to start.
Plotting Review: After plotting your data you will be able to see how the direction of the shadow of the gnomon varies with the time of day. You may want to review plotting data before you start. If you are already in the activity, click Browser Reentry and then click the browser back button to return to this page. Click the PLOTTING button at the left to review plotting.
Challenge: First watch the recording of how to use Squeak to make the objects on the page perform for you. Playing is a great way to learn. You must click Escape Browser and your resolution must be set at 1024x768 to view the recording properly. Click the PLAYING button at the left to start the recording. If you know trigonometry and how to program, return to SUNDIAL for a super challenge to create a sundial with corrections for longitude and the Equation of Time (see link below). Submit your Squeak projects for the challenges to the NASA CONNECT web site. We will post all the good entries that we receive to acknowledge your good work and let others learn from your solution.

After you are familiar with the Squeak Sundial project, try these additional challenges. Explore, create, and have fun learning.