Grade 3
Physical Science
7 lessons · Lesson plan · Printables · Interactive Activity
Forces & Motion
Balanced & Unbalanced Forces
Investigate how pushes and pulls in different directions affect an object's motion. Change one force condition at a time and use what the object does as evidence.
45 min · ~8 min prep · 6 materials
Forces and Interactions
Magnetic Forces
Use observations and simple data to explain magnetic pushes and pulls across a gap. Compare pole orientation, distance, and specific tested objects.
45 min · ~10 min prep · 6 materials
Forces & Motion
Patterns of Motion & Prediction
Observe repeated motion, identify a pattern, test a prediction, and revise when conditions change.
45 min · ~8 min prep · 4 materials
Forces and Interactions
Static Electricity: Forces Without Touching
Investigate how charged objects can attract or repel across a gap and use distance evidence to describe cause-and-effect patterns in static electric interactions.
45 min · ~10 min prep · 5 materials
Forces and Design
Bridge Engineering: Designing for a Load
Build, test, and improve small bridge prototypes while controlling span, materials, and load placement so failure points become useful engineering evidence.
50 min · ~15 min prep · 7 materials
Forces & Motion
Friction Experiment: Which Surface Slows Motion?
Run a fair sliding test on different surfaces, measure how far an object travels, and use the results to explain how friction can change motion.
45 min · ~10 min prep · 8 materials
Science Practices
Scientific Method: Ask, Test, Measure & Explain
Turn a question into a fair test, change one variable, collect repeated data, and use evidence to explain what the results support.
45 min · ~12 min prep · 5 materials