Consider This
For this challenge, you will create an arm/prosthetic/crane/grabbing device – whatever you would like to call it – using recyclables, craft materials and/or building toys. With this device, you should be able to grab, pick up and move an object from one spot to another - like a human arm! Be creative! What is the maximum distance an object can be picked up and move to?
PDF Content:
Your Goal
Prototyping is about solving problems using simple materials. Your goal is to design and build a prosthetic prototype that can safely pick up and move an object from one location to another.
Steps Overview
Step 1: Prepare and Plan (Page 2)
- Read the guide and assess your available materials.
- Begin brainstorming your initial design idea.
- You can always change your direction as you go!
Step 2: Build and Iterate (Pages 3–5)
- Construct your initial prototype using the guide and tips.
- Test, reflect, and revise your prototype based on your observations.
- Continue modifying until your design can reliably perform the task.
Step 3: Reflect and Record (Page 6)
- Reflect on your design choices and process.
- Think critically about improvements and alternative materials or methods.
Materials
You may select from the available materials—use as many or as few as you like.
Tip: Think creatively about how to repurpose materials. For example:
- Pencils can form a structural frame or a claw.
- Rubber bands can create movement or grip mechanisms.
Detailed Steps
Step 1: Take Inventory & Make a Plan (Page 2)
Checkpoint: Establish a Starting Point
Organize your materials into two categories:
- Structural Elements: Rigid components that form the frame or support of the prototype (e.g., sticks, straws, pencils).
- Utility Elements: Parts that perform the grabbing or moving function (e.g., rubber bands, string, paper clips).
Use your materials creatively—sometimes combining weaker items can create a stronger whole.
Step 2: Build and Test Your Prototype (Pages 3–5)
Checkpoint: Make an Initial Plan
- Structural Plan: How will you build a strong base to carry the object?
- Utility Plan: What flexible or functional parts can perform the grabbing/moving? How will they attach to the structure?
Build an Initial Prototype (Page 4)
Checkpoint: Act on Your Plan
- Start building using your plans.
- Test the prototype’s functionality and record observations:
- Was it easier or harder to build than expected?
- How well did it work?
- What would you change to improve performance?
Observe and Adapt (Page 5)
Checkpoint: Continue the Iterative Process
Reflect and ask yourself:
- Are there unused materials that could now help?
- Can you strengthen the structure?
- Would removing certain parts help refine your design?
- Could a different approach—like scooping instead of gripping—work better?
- Do you need to reinforce connections or replace weak components?
Keep adjusting your design based on feedback and test results.
Step 3: Reflect on Your Progress (Page 6)
Checkpoint: Reflect on Your Prototype!
Answer these reflection prompts:
- What inspired your prototype design?
- Why did you choose this direction?
- What changes did you make during iteration and why?
- Were there any materials you wish you had?
- Which materials caused challenges?
Ready? Set. Go!
Time to innovate, iterate, and reflect. Good luck!
Key Terms
prosthetic: (noun) artificial body part, like an arm, leg, or heart
prototype: (noun) a first, typical or preliminary of model of something from which other forms are developed or copied
engineering: (noun) process of creating and building structures, products, and systems by using math and science
empathy: (noun) ability to understand and share the feelings of another
Resources
Here's some food for thought about prosthetic arms!
https://pbskids.org/designsquad/parentseducators/guides/mission_robo_arm.html
Project Examples
Have a solution to this challenge you want to share? Take a photo or video of your prototype, post it on social media, and don’t forget to tag us @fluxspace_io
