Curated OER
Curious? Is Mars All Wet?
In this "Curious? Is Mars all Wet?" worksheet, students answer 5 questions interactively about the presence of water and life on Mars, then check their answers online.
NASA
Nasa: 21st Century Explorer
This is a standards-based program follows that provides content on what astronauts eat, how bodies change in space, and how imagination would help you to become a space explorer. Teacher and student educational resources, glossary, books...