
Experiment
Sundial
- ages 3–15
- 30 min
Children make a sundial using a stick and stones, marking the cast shadow every hour.
Steps
- Conversation: why summer days are long and June 21 is the summer solstice.
- In a sunny outdoor spot, stake a sturdy stick upright into the ground.
- Every hour on the hour, children mark the tip of the shadow with a stone labeled with the time.
- Observe how the shadow shifts in direction and changes in length across the day.
- In the afternoon, check if your sundial accurately tells the time.
Tip: Children can paint the stones beforehand with acrylic paints.
Materials needed
- Acrylic paints (1 set)