Real engineers present their work! Today you'll share your bridge, your process, and what you learned — just like a real engineering showcase!
📋 NGSS Standard:K-2-ETS1-3 — Analyze data from tests of two objects designed to solve the same problem to compare the strengths and weaknesses of how each performs.
🎯 Learning Objectives
By the end of this lesson, students will be able to:
Present their final bridge design to a family member
Explain their complete engineering process from problem to solution
Evaluate which version of their design worked best and why
🔬 The Big Idea
Engineering doesn't end when you build something. Real engineers communicate their work — they explain their designs, show their data, and teach others what they learned. This is called an engineering presentation or design showcase.
Today, students will present their bridges to a family audience, complete an Engineering Report, and reflect on everything they've done in this unit.
🌟 Welcome to the Engineering Showcase! 🌟
You designed. You built. You tested. You improved. Now it's time to share!
This lesson's Engineering Report worksheet (last pages)
Toy car or marble (for live demonstration!)
Puddle tray (optional — for live demo)
An audience of at least one family member 👨👩👧
🔬 Let's Get Started
Step 1 — Complete the Engineering Report (10 min)
Before presenting, students fill out the Engineering Report worksheet (last pages). This is their documentation — the record of everything they did. Help younger students by scribing their answers while they explain verbally.
Step 2 — Prepare the Presentation (5 min)
Go over the presentation outline. Students should be able to explain all 5 steps. Practice once with the parent/teacher before presenting to a wider audience. Tip: It doesn't need to be memorized — they can hold their papers and point to things!
Step 3 — THE SHOWCASE! (10–15 min)
Present to at least one family member. Walk through the 5-part presentation (see below). Allow the audience to ask questions at the end.
Step 4 — Unit Wrap-Up Discussion (5–10 min)
After the presentation, come together for the unit wrap-up discussion (see below). Celebrate completing the full engineering design cycle!
🎤 The 5-Part Engineering Presentation
1
What was the problem?
"The problem I was solving was…" Describe the bridge challenge in your own words. Why is it a real problem? What would happen without a bridge?
2
What did I design?
"My design was…" Show the original drawing. Explain what each part was supposed to do. What was your idea and why did you think it would work?
3
How did I test it?
"I tested it by…" Explain the 3 official criteria. Show the test results table. Did Version 1 pass? What happened?
4
What did I change and why?
"I improved my design by…" Show the Version 2 change. Explain what wasn't working and how you fixed it. Show the comparison results.
5
Does it work? (Live demo!)
"Let me show you!" Run the bridge over the puddle with the car or marble. Let the audience see the design in action. Celebrate what works!
💬 Discussion Questions
🗣️ Unit Wrap-Up Discussion
Question:"Engineers solve problems every day. Can you name 5 things in your house that an engineer designed?"
→ Everything! The chair, the window, the refrigerator, the light switch, the spoon, the door handle, the stairs, the faucet, the toilet, the phone, the clock. Engineering is everywhere — it's the answer to "how do we make life better?" and then building that answer.
Follow-up:"What kind of engineer do you want to be when you grow up — and what problem would you want to solve?"
→ No wrong answers here! Civil engineers build bridges and roads. Mechanical engineers design machines. Biomedical engineers make medical equipment. Software engineers build apps. Environmental engineers protect the planet. Chemical engineers create materials. All of them start by asking: "What's the problem?"
🗣️ Reflection questions:
What was the hardest part of the whole unit? What did you learn from it?
What surprised you most — about engineering, about materials, or about yourself?
If you could redo any lesson, what would you do differently?
What's one thing you want to design and build next?
🔧
Ready to test your engineering knowledge?
Take the Unit 1 quiz and show what you've learned about the engineering design process!
🎓 Unit 1 Wrap-Up: Build It! — Engineering for Little Scientists
Over 6 lessons, you learned the full engineering design process:
🔍Identify Problems
❓Ask Questions First
✏️Draw Before Building
🏗️Build Your Design
🧪Test & Record Data
🔄Improve & Iterate
These are the same skills used by:
Aerospace engineers at NASA • Architects designing hospitals • App developers building tools • Scientists creating medicines • Robotics engineers building the future
🌟 You ARE an engineer. You always have been. 🌟
🚀 Extensions
📷 Engineering Portfolio: Collect all worksheets, drawings, and photos from the unit into a folder. That's a real engineering portfolio!
🏘️ Community Problem Solver: Pick a problem in your neighborhood (a slippery step, a hard-to-reach shelf, a garden that needs better watering) and do the full design process: define, question, draw, build, test, improve.
📺 Engineering Role Models: Watch a video about a real engineer. Look for engineers who look like you or come from your community — engineering is for everyone.
📚 Next Unit: What other science and engineering units would you like to explore? (Structures, electricity, simple machines, water filtration, wind power…)
👩🏫 Parent/Teacher Notes
Make the showcase feel special: Set up the bridge on the table, gather family. This doesn't need to be elaborate — even one extra audience member makes it feel like a real presentation. The formality teaches communication skills.
Let the student lead entirely: Resist the urge to fill in gaps or correct mistakes during the presentation. After is fine — during undermines their confidence.
"Engineering is everywhere" discussion: Walk through the house with kids after the lesson and literally point at objects: "Engineer designed this. Engineer designed that." It reframes the world as designed — and opens the door to "I could design things too."
Assessment — Unit Completion: Student can describe the full 5-step process. Student can evaluate which design version was better and why. Student completed the Engineering Report. Student presented to at least one person.
Redraw your Lesson 3 sketch here, or attach it with tape or glue
🧪 My Test Results (Summary):
Version
Tests Passed (out of 3)
What worked / What didn't
Version 1
__ / 3
Version 2
__ / 3
🔄 The Improvement I Made (from V1 to V2): (write or draw)
🏆 My Best Design (V1 or V2?) and Why: (write or draw)
🌟 One Thing I Learned About Engineering: (write or draw)
💡 If I Built Version 3, I Would: (write or draw)
🔑 PARENT/TEACHER ANSWER KEY — Detach before giving worksheet to students
🎤 Presentation Checklist
Use this to guide or evaluate the student's showcase presentation:
✅ Stated the problem in their own words
✅ Showed and explained the original drawing
✅ Referenced the test results table
✅ Explained what changed from V1 to V2 and why
✅ Demonstrated the bridge live (or described how it worked)
✅ Could answer at least one audience question
📋 Engineering Report — What Good Answers Look Like
Best design: V2 is almost always better — but give credit if student chooses V1 with a valid reason (e.g., "V2 fixed test 2 but broke test 1")
One thing learned: Any honest reflection — "I learned that flat paper isn't strong enough" / "I learned to draw before building" / "I learned that a failed test isn't a bad thing"
Version 3 idea: Any genuine improvement they can explain — shows forward engineering thinking
