Activity 1
Go to: https://www.learner.org/interactives/dynamicearth/
Activity 2
Go to: www.lessonpaths.com/learn/i/unit-1-inside-earth/layers-of-the-earth-interactive
Activity 3
Go to: http://volcano.oregonstate.edu/earths-layers-lesson-1
Activity 4
Go to: http://www.quia.com/rr/38064.html
Go to: https://www.learner.org/interactives/dynamicearth/
Activity 2
Go to: www.lessonpaths.com/learn/i/unit-1-inside-earth/layers-of-the-earth-interactive
Activity 3
Go to: http://volcano.oregonstate.edu/earths-layers-lesson-1
Activity 4
Go to: http://www.quia.com/rr/38064.html