Feb 5, 2026 | Big Idea 1, OAE, Resource
In this activity, students will understand that it is difficult to tell the time without an instrument and will build and test an hourglass to measure time. They acquire an understanding of what causes day and night and comprehend time differences. Students will also...
Feb 5, 2026 | Big Idea 1, OAE, Resource
We usually think that stars are fixed in the sky and that their mutual positions do not change in time. Ancient civilizations built their religious and philosophical systems on this empirical evidence. However, we now know that this is not true; stars have proper...
Feb 5, 2026 | Big Idea 1, OAE, Resource
In this activity, students approach the notion of time and how time can be measured. They build and use a sundial, learning that you can tell the time using the Sun and discovering that a long time ago, it was much more difficult to tell the time than it is today....
