Duct Tape Mastery

We use a lot of duct tape in my classes (cardboard canoes anyone?)... I was impressed by Troy's artisanship with the material for his Halloween costume. Nice job. Awesome point headed your way!

Boys will be boys...

Josh, Juan and Austin playing the "man up" game with the mousetrap...

4th Annual Mousetrap-Racecar Races!

We've learned about a number of simple machines in the Principles of Engineering courses. A common theme amongst these devices is the concept of using mechanical advantage to trade force for distance or distance for force. How can we use this trade off in context in the classroom?

For this challenge you and a team mate will design, build and compete with a Mousetrap racecar. Specifically, you will use a third class lever and a wheel and axle simple machine to prototype a race vehicle.


Criteria:
Design, build and compete with a Mousetrap Racecar (A "car" uses at least two axles).
Maintain a clean workspace.

Constraints:
One mousetrap
No more than 12" of masking tape
Fischertechnique robotics parts
No more than 24" of string
All materials used must travel with your vehicle
You must work through the stages of the event (see Achievements below)
Additional materials by Instructor approval



Achievements (by stage):
Post your results for the Simple Machine Challenge pt I to your blog. Tally your total number of Achievements earned and justify each within the post. Your grade is the total number of Achievements you earn curved against the number of Achievements your classmates earn.


Design Stage:
"Brainiac" - Brainstorm solutions for your design. Generate a list of at least 10 ideas/concepts.
"Visualize It!" - Create a sketch of a design and label key features.


Build Stage:
"Build It" - Build your design. Document it with a photo.
"The Price of Glory" - If each part you use costs $1, generate a total cost for your build (This info will be used to generate "cost" data to add a pricing element to the game next year).

Test (Compete) Stage:
Each car will compete in two events. Generate your design accordingly.
1) The Distance Event: Compete for the furthest distance. Teams will race one at a time and have up to 3 attempts to achieve the longest distance. We will race on the tiles of the classroom unless the class decides we need more space. Your best result will be marked with a piece of masking tape. The marked location is where the car comes to rest (cars have been known to roll back at times!).
2) The Acceleration Event: Cars will compete head to head in a competitive bracket. The winner of each duel will move on to the next round. The course is 24" long.

"Competitor" - Compete in the 2nd Annual Mousetrap Racecar Challenge.

"Long Distance Winner!" - Travel the furthest in the distance race.
"Going the Mile!" - Travel the furthest or second furthest in the distance race.

"Led Foot" - Be the team to win the acceleration bracket.
"Heavy Foot" - Be the team to win or finish second in the acceleration bracket.

"Feedback" - Collect feedback (at least one each of +, change, ? and !) from yourself or your classmates.


Iterate Stage:
"Re-work" - Change your build based on your experience with the race/feedback you collected. Document any changes.
"Game Changer" - Develop a new rule or change to the game that you feel would make the event better. Explain your concept.
"Name it" - Invent a name for an achievement that you think is better than what we have currently.


Clean Up Stage:
"Leave It Cleaner Than You Found It" - Did you leave your workspace cleaner than you found it? Explain.


Reflection Stage:
"Design/Build" - What is a "Design/Build" process? How did your experience with this challenge relate to that? Why might you experience this in a career related to technical innovation?


There may be an option to compete again (with the same or new rules) depending on the input we receive from the teams and the timeliness with which we complete the event.

Lever Magic!

We've been doing some theoretical calculations. Block day is a good chance to move away from theory and into first hand experience...

Design-Build Challenge 02 - Marble-drop Madness!

Today's "Design-Build" challenge sees what we can do with the following equipment:
-14 straws
-10 toothpicks
-3 paper cups
-3 feet of masking tape
-1 round marble

Goal: release your marble onto a freestanding contraption of your own design located at the edge of your desk. The goal is for your "structure" to direct your marble into a cup on the floor. The winner is the team who's cup is located furthest (horizontally) from the edge of the desk.

Rules: You may only use the materials specified above. Your marble must end up in a cup positioned on the floor in order to earn a result.

Feedback: Score is determined by distance from the table. Your result will be compared against your classmates to determine ranked result (1st, 2nd, 3rd, etc.)


Points! Earn one point for each of the following:
1) Your place in the competition (1st Place = 1 pt, 2nd Place = .9 pt, 3rd Place = .8 pt, etc.)
2) Document your effort on your online portfolio. Include pictures and a bullet point summary of the goal, rules and results you achieved.
3) Clean up! Include an image of at least one of your teammates cleaning up your workspace.

Perspective Sketching

Go Islanders!

I was wearing red today in support of my alma mater, LJHS... that said, I would love nothing more than to see our team beat them tonight at the La Jolla homecoming game. What a great crew we have, good luck!:

Energy Sources!

Image from classroom-energy.org
Americans spend 500 billion dollars each year on energy. As populations and appetites increase, the world faces a challenge of significantly growing energy needs. Many unique energy sources are available. To meet future energy needs, engineers need to design technology to contribute new ways to harness energy, increase efficiency, and better transport and store energy.


Objective:
Your task as a class is to prepare a presentation on the different energy sources we use collectively as a society (9 types from the graphic above). The class must cover each of the sources listed.

Presentation Grading (5 pts)
The presentation is worth 5 points. 4 points will be earned by each team and the remaining point will be awarded collectively to the class. If you address the content and process standards below, you will earn 4 points. If the class collectively addresses the process standards the 5th point will be awarded.

Product:
- Energy Source - Overview, Steps for Harnessing Energy, Major Energy Uses
- Is the energy source classified as nonrenewable, renewable, or inexhaustible?
- What are the infrastructure requirements for utilizing this energy source?
- What emerging technologies will make this energy source safer, more usable, more efficient, cleaner, etc?
- Consideration of Efficiency/Conservation
- Costs - Setup, Consumer Costs
- Pros/Cons
- Outlook for the future

Process:
- Unified look/theme to entire presentation
- Reduced Text - Use bullets and talk to them
- High Value Images - do they tell a story?


Blog Post Grading (2pts)
Post the images of your section of the "Energy Sources!" Presentation to your Blog. Copy and paste the following questions into your post after your slides and answer them.

1. Describe one thing that surprised you about the energy source that you researched and presented.



2. Describe one thing that surprised you about an energy source that another team presented.



3. Describe and defend what you believe to be the most important technological need regarding energy.

Student Work Sample: Cardboard Canoe Challenge Portfolio Post

Caleb has a strong post for this year's cardboard canoe challenge. It's not flawless, but can serve as a good example to keep in mind as you finish/improve your own. Click here to see his post!