unit 3: videos
Lesson 1-1
Water in our World
Lesson 2-2
Mountain
Lesson 2-2
Map (Optional)
Lesson 3-1
Earth from Space
lesson 3-2
Earth’s Observations
lesson 3-2
Fog and Clouds
LESSON 3-2
Comparing Amounts of Salt and Fresh Water on Earth
lesson 4-1
Celebrate the Ocean