| Elementary | Â |
How Long Is the Sun in the Sky?
Explore the changes throughout the seasons with an animation-based investigation. Students collect sunlight data, and create simple graphs to solve seasonal mysteries.
Free Lessons
Download a free hands-on activity and start teaching in minutes.
| Elementary | Â |
Written in the Stars
Go stargazing with videos and observe winter constellations in this stellar free investigation!
| Secondary | Â |
Modeling the Seasons
Create a classroom planetarium and explore the Key Science Concept Video to investigate Earth’s tilted axis and the seasons.
Career Profile – Astronomer
Have you ever wondered how astronomers study space? Find out in this out-of-this-world career profile!