To start off our exploration students brainstormed in small groups about movement and force. We then created a class web on an anchor chart to use as a reference throughout our lesson. When we thought of anything new, we added to it!An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
After students got their wheels turning about force and how things move I placed a long rope in the center of our classroom. Students were asked if the rope was moving or not and to provide evidence as to why they thought that way. While we experimented ways to move the rope we came to the conclusion that the rope only moved when the push or pull (force) was unbalanced. To reinforce this idea, we then used tug-of-war and tested out students predictions.
Scenario Examples:
- Taller students exert more force than shorter students.
- Older students exert more force than younger students.
- One teacher exerts more force than two 3rd grade students.
Throughout this activity students questioned, predicted, and problem solved. As a challenge students were asked how to alter specific scenarios to create a balanced force. Ask your child what their favorite scenario was!
Check back soon to see what 3rd graders will be doing next as they continue to explore forces!
-Mrs. Henderson
