A lesson plan containing two activities for middle schoolers to gain a better understanding of geologic time scale. The first activity allows students to get a visual of geologic time by role playing events in time on a football field....

The Earth is 4.6 billion years old- but how can humans relate to a number so colossal, and where do we fit on the geologic timeline? Joshua Sneideman reminds us of our time and place in the universe. [3:45]