engineering design

Worksheet:
Save the Tomato! Engineering Design JournalWorksheetPublic Unlisted
Study Guide:
Engineering Design ProcessStudy GuidePublic Unlisted
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Save the Tomato! Engineering Design Process HandoutDocumentPublic Unlisted
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Welcome to Fourth Grade Science: Let's Design, Build, and Grow Together!DocumentPublic Unlisted
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Welcome to Fourth Grade Science: Let's Design, Build, and Grow Together!DocumentPublic Unlisted
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Save the Tomato! STEM Engineering Design ChallengeDocumentPublic Unlisted
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Save the Tomato! STEM Engineering Design ChallengeDocumentPublic Unlisted
Worksheet:
Save the Tomato! STEM Engineering Design JournalWorksheetPublic Unlisted
Worksheet:
Save the Tomato! Student STEM JournalWorksheetPublic Unlisted
Quiz:
1. Your team is told that the final structure must completely cover the tomato so that no falling debris can touch it. What engineering term describes this specifi
2. Your teacher gives your team exactly 💲15 in classroom tokens to buy extra tape for your structure, and you cannot spend a single penny more. What is this stric
3. Instead of building your final structure right away, your team quickly tapes two cards together to see if they will stand up on their own. What is this quick, e
Save the Tomato QuizQuizPublic Unlisted
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Helpful Web Resources: Teaching the Engineering Design Process (EDP)DocumentPublic Unlisted
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Extension Activities for Early Finishers: Save the Tomato STEM ChallengeDocumentPublic Unlisted
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Hey there, future engineers! Are you ready to build, test, and design amazing things? Real-world engineers are professional problem-solvers who use a super cool
When engineers build solutions, they must follow **criteria** (the goals of what their invention *must* do) and **constraints** (the rules or limits they must f
If you want to practice these skills, play epic games, and watch kids just like you tackle big missions, check out these awesome websites! Grab your thinking ca
Discover STEM: Awesome Websites for Young Engineers!DocumentPublic Unlisted

Document:Extension Activities for Early Finishers: Save the Tomato STEM Challenge

This teacher resource guide provides structured, age-appropriate, and low-prep extension activities designed specifically for 4th-grade students who complete their building, testing, or journaling tasks ahead of their peers. These activities are carefully aligned with the Pennsylvania STEELS standards (Science, Technology, and Engineering, Environmental Literacy and Sustainability). By focusing on engineering habits of mind, these tasks channel student energy into constructive peer collaboration, mathematical optimization, rigorous empirical testing, and creative communication.

1. The Design Consultant (Constructive Peer Review)

In real-world engineering, collaboration and external feedback are vital to optimization. Early finishers can step into the role of Design Consultants to support other teams without taking over their physical builds. This role nurtures communication skills and peer evaluation (PA STEELS 3.5.4.B).

The Consultant Protocol: Provide the student with a "Consultant Badge" (a simple clip-on badge or card) and a small notebook or clipboard.
The Mission: The student visits other active teams and quietly observes their work. They are strictly prohibited from touching other teams' structures, tape, or materials.
Constructive Feedback Prompts: The student must ask the active team: "What is the biggest challenge your design is facing right now?" After listening, the consultant must offer exactly one "glow" (something strong about the prototype) and one constructive "grow" (a suggestion to address a potential design flaw, such as suggesting a structural fold or a wider base).
Consulting Log: In their journal, the consultant notes:
- Team Observed: [Team Name]
- Observed Strength: [Specific structural element, e.g., triangle joints]
- Proposed Solution: [Specific feedback offered, e.g., reinforcing the ground anchors]

2. Budget Optimization Challenges

To deepen mathematical reasoning and integrate computational thinking, challenge early finishers to optimize the efficiency of their design. In engineering, a working design is only successful if it is also cost-effective.

The Simulated Cost Challenge: Introduce a simulated budget where every structural component carries a specific price tag. For example:
- Each index card used = $10
- Every 5 cm of tape used = $5
The Task: Students must calculate the total cost of their own successful prototype. Once they have their baseline cost, they must design a "Budget Version" on paper (or build it, if materials permit) that meets the same criteria but costs at least $15 or $20 less.
Efficiency Metrics: Have students calculate a cost-efficiency score for their structure using this simple ratio: $\text{Efficiency Score} = \frac{\text{Maximum Weight Supported (grams)}}{\text{Total Simulated Cost (\\text{\textdollar})}}$ Students can compete to see who can achieve the highest efficiency score in the classroom, demonstrating that physical minimization is just as crucial as structural strength.

3. Advanced Iteration & Stress Testing

When a prototype successfully protects the tomato, an engineer's job is still not finished. They must find the "point of failure" to fully understand the material limits. Early-finishing teams can gather valuable empirical data by pushing their designs to extreme conditions.

Extreme Drop Height: If the initial design survived a drop test of 30 cm, students can systematically increase the drop height of the testing weight (e.g., 40 cm, 50 cm, 60 cm). They must record the exact height at which structural collapse occurs or when the tomato sustains a "bruise."
Heavier Load Testing: Students can test their structures against heavier falling debris, adding incremental weights (e.g., taping washers or coins to the dropping block) and documenting the exact weight capacity of their prototype.
The Stress-Testing Log: Students create a table to record these new data points, practicing physical science observation (PA STEELS 3.2.4.A) and collecting quantitative evidence:

Trial Number	Testing Variable (Height / Weight)	Structural Behavior Observed	Damage Assessment
Trial 1	Drop Height: 40 cm	Slight bend in the top support	Tomato undamaged
Trial 2	Drop Height: 50 cm	Right corner buckled completely	Tomato crushed

4. STEM Journalism & Detailed Schematics

For students who excel at written and visual communication, these prompts encourage them to translate their physical experience into media assets, highlighting the importance of communicating design solutions.

The Blueprint Blueprint (Version 3.0 Schematic): Ask students to draw an advanced, professional schematic of their proposed "Version 3.0" design. The schematic must be drawn on graph paper with a ruler, using a strict, labeled key to point out structural features (e.g., cross-braces, wide load distribution pads, and impact-absorption points). They must include arrows to represent force distribution when a weight impacts the structure.
The Farm Dispatch Newspaper Report: Students write a creative newspaper article reporting on the success of their engineering firm's solution. The article should include:
- An exciting headline (e.g., "Local Engineers Save Pennsylvania's Heirloom Crops from Sudden Storms!").
- An interview quote from the fictional farm owners expressing gratitude for the protective structures.
- A technical description explaining exactly why the design worked, using engineering terms like criteria, constraints, prototype, and iteration to describe their journey.