Big idea 04, Week 01: Why Can't You Breathe in Outer Space? (Daily Science)
This daily science unit for grade 3 presents directions and five activities in which students learn that Earth has breathable air in an atmosphere made of different gases but that space has no breathable air. Week 1 of 5 on "Big Idea 4: Air is a gas that surrounds us, takes up space, and creates weather. " Includes answer key.