Free Fall Activity 
In this activity, students investigate the acceleration of falling objects by observing objects of different masses and surface areas as they fall. They build a computer model to represent the relationships they observe, and they use the model to test various hypotheses. 
Teacher Materials Student Activity Student Assessment Learning Goals/Standards STELLA Versions

INIT height = 100 rate_of_change_of_height = velocity velocity(t) = velocity(t  dt) + (rate_of_change_of_velocity) * dt INIT velocity = 0 rate_of_change_of_velocity = acceleration_due_to_gravity acceleration_due_to_gravity = 9.8 

