• Station 1: Levers - Rulers, pencils (fulcrums), small weights, recording sheets
• Station 2: Pulleys - Simple pulley systems, weight buckets, measurement tools
• Station 3: Inclined Planes - Ramps at different angles, toy cars, measuring tape, stopwatches
• Station 4: Wheels & Axles - Various wheel toys, disassembled wheels, design paper
• Station 5: Digital - Tablets with simple machines simulation app
• Station cards with instructions at each location
• Student rotation tracking cards
• Timer

Set up 5 stations around the classroom, each focusing on a different simple machine. Create detailed instruction cards for each station with step-by-step directions and investigation questions. Prepare a rotation schedule ensuring each group visits all stations.

1. Introduce the concept of simple machines and briefly preview each station.
2. Divide class into 5 heterogeneous groups and assign starting stations.
3. Station procedures (12-15 minutes per rotation):

4. Station 1 (Levers)

5. Investigate first, second, and third-class levers using rulers and fulcrums
6. Test how changing fulcrum position affects effort needed to lift weights
7. Record observations in science notebooks

8. Station 2 (Pulleys)

9. Compare lifting a weight directly vs. using a single pulley vs. using a double pulley
10. Measure and record the force required for each method

11. Station 3 (Inclined Planes)

12. Test how ramp steepness affects the force needed to move an object upward
13. Time how long it takes a car to roll down ramps of different angles

14. Station 4 (Wheels & Axles)

15. Examine different wheel and axle systems
16. Design a wheel and axle solution for a given transportation problem

17. Station 5 (Digital)

18. Use simulation app to build and test virtual simple machines
19. Complete digital challenge cards at increasing difficulty levels
4. Signal rotation with a timer. Allow 1 minute for transition between stations.
5. After all rotations, conduct a whole-class discussion comparing the different machines and how they make work easier.
6. Final assessment: Have students create a simple machines concept map showing how the different machines are related.

For younger students, simplify the investigations and provide more structured recording sheets. For advanced students, add challenge cards at each station that introduce compound machines. For students with physical limitations, ensure stations are accessible and offer partner options.

Review station recording sheets for accuracy and understanding. Observe students during rotations to assess engagement and collaboration. Evaluate final concept maps for connections between different simple machines.