***TEKS ALIGNED***

🚗 Ramp Height & Speed Lab: Exploring Mechanical Energy (TEKS 3.8B)

Help your students see mechanical energy in action with this engaging, hands-on science investigation! In this lab, students plan and conduct an experiment to explore how changing ramp height affects the speed of a toy car—and what that means for mechanical energy.

Aligned to TEKS 3.8(B), this activity is perfect for reinforcing the relationship between speed and mechanical energy through real-world observation and data collection.

What Students Will Do

Students work collaboratively to:

• Build ramps at three different heights
• Measure ramp height in centimeters
• Time how long it takes a toy car to travel a fixed distance
• Record data from multiple trials
• Analyze patterns and explain how ramp height impacts speed and mechanical energy
  

📘 Lesson Highlights

• Clear teacher prep and step-by-step lesson flow
• Defined student group roles to promote accountability and teamwork
• Built-in prediction, investigation, and discussion opportunities
• Supports scientific thinking, data collection, and cause-and-effect reasoning
  

📦 Materials Needed (per group)

• Toy car
• Ramp (board, folder, or foam board. I use cardboard)
• Stack of books (at least 3)
• Meter stick or ruler
• Stopwatch or timer
• Masking tape
• Student recording sheet
• Pencil
  

⏱️ Time Required

• Introduction & predictions: 5 minutes
• Lab investigation: 15–18 minutes
• Discussion & debrief: 3–5 minutes
  

🎯 Learning Objective

Students will plan and conduct an investigation to observe how increasing ramp height increases speed, demonstrating that greater speed means greater mechanical energy.

✅ Perfect For

• 3rd grade science
• TEKS-aligned instruction
• Hands-on learning
• Small group investigations
• Science labs or stations
  

Your students will love racing the cars—and you’ll love how clearly they grasp mechanical energy by the end of the lesson! 🚀