Forces | Small Group
In this 20-minute small-group lesson, students explore how forces cause objects to move, stop, speed up, slow down, or change direction. Through quick hands-on observations and discussion, they identify different types of forces and explain their effects using scientific vocabulary.
| Term | Definition |
|---|---|
| Force | A push or pull on an object. |
| Friction | A force that slows motion when two surfaces rub together. |
| Balanced forces | Equal forces acting in opposite directions; motion does not change. |
| Unbalanced forces | Unequal forces that cause a change in motion. |
| Motion | The movement of an object from one place to another. |
Show a toy car or ball and ask, 'What makes it move or stop?' Introduce the idea that forces are pushes and pulls.
Share quick ideas and predict what will happen when different forces act on the object.
Define force, friction, balanced forces, and unbalanced forces using simple examples. Model with the object, pushing it lightly and then more strongly.
Listen, repeat key terms, and answer short questions about each example.
Give each group an object to push or pull. Direct students to test different strengths and directions, then observe changes in motion. Prompt them to notice when friction slows the object.
Work together to move the object in different ways, record observations, and discuss what caused the changes.
Ask each group to share one observation and one force term used correctly. Clarify misunderstandings as needed.
Report findings using vocabulary such as push, pull, friction, or unbalanced forces.
Ask one exit question: 'What is one way a force can change an object's motion?' Collect verbal or written responses.
Give a short response showing understanding of force and motion.
Review the key idea: forces are pushes and pulls that can change motion. Revisit the words force, friction, balanced forces, and unbalanced forces, and have students state one thing they learned.
Formative assessment will be based on teacher observation during the investigation, student discussion, and responses to the exit question demonstrating understanding of how forces affect motion.