Collision Force Laboratory ✨ cross-curricular
Teacher: TeacherAI | Grade: 4 | Subject: Science, Technology | Duration: 45 minutes
📝 Description: Students design, test, and improve collision systems using cubes and beanbags while documenting their engineering process digitally.
Standards
- 4-PS3-3 (Ask questions and predict outcomes about the changes in energy that occur when objects collide)
- 4-PS3-4 (Apply scientific ideas to design, test, and refine a device that converts energy from one form to another)
- TECH.4.4.a (Use a deliberate design process for generating ideas, testing theories, and solving authentic problems)
- TECH.4.4.b (Select digital tools to plan and manage design processes considering constraints and calculated risks)
- TECH.4.4.c (Develop, test, and refine prototypes as part of a cyclical design process)
Learning Objectives
Students will be able to:
- Design a collision system using available materials and predict collision outcomes
- Test collision designs by measuring distance traveled after impact using counting cubes
- Document design iterations digitally, recording failures and improvements
- Apply the engineering design process through multiple test-and-improve cycles
- Explain how energy transfers during collisions affect motion outcomes
Supplies Needed
- Counting manipulatives (cubes)
- Beanbags (3-5)
- Tablets or Chromebooks
- Research notebooks
- Pencils
- Chart paper
Lesson Structure
Opening (5 minutes)
Demonstrate a cube collision by rolling one cube into another. Ask: "What happened? Where did the energy go?" Record student observations on chart paper. Introduce today's challenge: "You're collision engineers! Design systems to make objects move the farthest after impact."
Main Activity (35 minutes)
Step-by-step instructions:
- Design Phase (5 minutes): Teams draw their initial collision design in notebooks. Must include: launcher (beanbag), target (cube tower), and measurement system. Predict how far cubes will travel.
- Build Phase (5 minutes): Teams build their cube towers (3-10 cubes high) and position beanbag launchers. Set up measuring system using cubes laid end-to-end as rulers.
- Test Phase (8 minutes): Each team conducts 3 collision tests. Measure distance traveled by knocked-down cubes using cube rulers. Record results in notebooks with specific distances.
- Digital Documentation (5 minutes): Teams use tablets to photograph their setup and record test results in a shared document. Include what worked and what didn't.
- Improve Phase (7 minutes): Teams redesign based on results. Change tower height, beanbag launch angle, or distance. Build and test improved version once.
- Final Documentation (3 minutes): Teams photograph final design and record improvements made. Note energy transfer observations.
- Share Results (2 minutes): Quick gallery walk to see other teams' solutions and digital documentation.
Closing (5 minutes)
Teams share one key improvement they made and why. Connect to energy transfer: "Energy from the moving beanbag transferred to the cubes, making them move."
Quick Check: What happens to energy during a collision? Name one way you improved your design. How did you measure your results?
Formative Assessment
During the lesson, look for:
- Students making predictions before testing and comparing results to predictions
- Teams systematically changing one variable at a time during improvements
- Digital documentation showing clear before/after comparisons with specific measurements
Differentiation Strategies
Support for Struggling Students:
- Provide pre-drawn design templates with labeled parts (launcher, target, measurement)
- Partner with stronger students for digital documentation tasks
- Use fewer cubes (3-5) for simpler collision systems
Challenge for Advanced Learners:
- Design multi-stage collisions where one cube hits another, creating a chain reaction
- Calculate and graph the relationship between tower height and distance traveled
- Create digital presentations comparing different collision variables and outcomes
ELL/ELD Support:
- Post vocabulary cards with visuals: collision, energy, transfer, design, improve
- Encourage drawing and labeling in notebooks alongside written descriptions
- Pair with English-proficient partners for digital documentation and verbal sharing
Printable Materials
Collision Engineering Log
| Design Phase | Details |
|---|---|
| Initial Design Sketch | [Draw your collision system here] |
| Prediction | I think cubes will travel _____ cube-lengths |
| Materials Used | Tower height: _____ cubes | Beanbag position: _____ |
| Test Results | Test 1 | Test 2 | Test 3 |
|---|---|---|---|
| Distance Traveled (cube-lengths) | _____ | _____ | _____ |
| What happened? | |||
| Improvement Phase | Details |
|---|---|
| What didn't work? | |
| What I changed: | |
| New test result: | _____ cube-lengths |
| Did it improve? Why? |