Car Design and Prototyping / (Egg Crash Challenge)

RC2018 Documentation


Can you design and build a race car, using only paper and glue, plus axles, axle housings (cut straws) and wheels provided, that is both fast (for racing against other cars) and crashworthy (for protecting its occupant - a raw egg)?

Materials: 1 straw / 2 axles/ 3 sheets of paper / 4 wheels and glue
No tape, cardboard or other extra material allowed.

Focus on • design/appearance• aerodynamic/speed • safety/strength
  1. Student Inquiry - Groups of 2
    1. Topics - Force, Net Force, Balanced/Unbalanced Force, Acceleration, Velocity, Friction, Mass, Weight, Drag, Simple Machines, Mechanical Advantage
    2. Process - BCS Research/Documentation Process/L.A.U.N.C.H
    3. Outcomes:
      1. Sketch up Visual Design Challenge (attempt to build using given materials)
      2. Vehicle built for speed and distance when racing down track
      3. Vehicle built for safety and strength - protects raw egg when crashed into a brick wall

Detailed Overview:

1st Car design - Aesthetic design
  1. Watch videos for design/creativity ideas
  2. Each team member creates a slideshow of 10 very different but attractive cars using Google images and Google Slides
    (maybe homework)
  3. Create 2 potential designs in Google Sketchup
    2. Put final copy of GS drawing in your class folder in Google Drive.
  4. Work in teams to design physical prototype for competition
  5. Test run "pretty" cars
  6. Concourse d'elegance - Kids vote on appearance
    (special guest judge? Mr. B- Art Teacher or parent)
  7. Groups documented once a week with documentation prompts and rubric

Force and Motion video assignment

2nd Car Design - acceleration

  1. Design and test a car for acceleration on their own
  2. Reflection - Discuss what worked and didn't for group skills and designs
    1. Revisted teamwork rubric
    2. Revisted documentation rubric
    3. Class created Top 10 list of things that affect acceleration
  3. Redesign car for acceleration using knowledge from reflection discussion above
  4. Predict speed and placement from prior test runs
  5. Acceleration competition on track using timer (could use photogates)
  6. Predict speed and placement from prior test runs
  7. Redesign and second competition (iterative design)
  8. Groups documented twice a week with documentation prompts and rubric

3rd Car Design - Egg Crash Challenge
  1. Watch and discuss Crash video NSTA
  2. Does group have ideas based on previous 2 designs?
  3. Design must allow for easy removal and inspection of the egg.
  4. Groups documented twice a week with documentation prompts and rubric
  5. Work in teams to design physical prototype for competition
  6. Test run "crash" cars from mid point of track. Survivors can go onto top of track.
  7. Iterative design and rerun
  8. IDEA: Have students design box to crash into at end of track

Iterative Design:
1) Design a car that is fast. - Challenge 1
2) Design a car that is & sides (with weight in it) - Challenge 2
3) Design with safety in mind. - Challenge 3
4) Design a balanced unit. Why will people pay more for some cars? Safety? Design? Can you design a safe, fast, nice looking

Name of Video
Video Link
Newton's Laws of Motion:
Wheel & Axle
Inclined Plane