Exploratorium
Exploratorium:seasons/shadows: Investigate How Shadows Shift Throughout the Year
Ancient Chacoans used shadows to tell daily time and seasons. Build a model that demonstrates the changes in Earth's tilt that affect the length of shadows relative to the sun that determines the seasons. The lesson plan uses everyday...
TeachEngineering
Teach Engineering: Portable Sundial
In this activity students will investigate the accuracy of sundials and the discrepancy that lies between "real time" and "clock time". They will track the position of the sun over the course of a relatively short period of time as they...
Other
Center for Science Education: Eye on the Sky: Observing and Using Shadows
This resource provides all the directions and worksheets necessary to make a sundial and record data with it.
Utah Education Network
Uen: Trb 3:1 Investigation 5 Making a Sundial
Make a sundial and learn how to use it.
Harvard University
University of Harvard: This Is a Stickup!
Students are taught how to make a sundial. The relationship between angles and the sides of a right triangle are explored. Great lesson plan ideas with plenty of background information. The lesson plan is adapted for grade levels k-6...
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Gnomon Model
A gnomon is the part of a sundial that casts the shadow. This simulated experiment illustrates the gnomon over the course of a day.
Harvard University
Eyes on the Sky, Feet on the Ground: The Earth's Rotation
Plenty of cool activities about the Earth's rotation can be found here, such as tracing shadows, observing shadows during different times of the day, and tracking the sun's path in the sky to understand the rotation of the earth.
Exploratorium
Exploratorium: Making a Sun Clock
Learn how to use the sun to tell time. This simple activity reinforces the concepts of light and shadow, night and day, time, and geographical north vs. magnetic north.
Scholastic
Scholastic Instructor: Sun Sational Science
Discover more about the sun when you visit this educational resource. The content of this site includes solar fun facts, experiments, and activities.