Am I a clock? Only time will tell.
This resource is an explanation of why are our shadows change when the sun is in a different location. The activity itself is taking pictures of your own shadow throughout the day facing north to see how it changes as the earth spins on it’s axis. It includes ample different resources for investigating all of the phenomena involved with this and has many activities included. In this instance, the resource serves more as a jumping off hub then as a procedural activity.
The information here is good and some of the resources linked within this page are really cool. If you’ve ever wondered about the exact science of why objects have shadows and what information it tells us, this is a great resource for you. Without a shadow of a doubt, I’d recommend this activity.