Egg Drop Challenge!!!!

• Team up with a partner
• Bethany Purdy
• Define the challenge, criteria and constraints
• The challenge: construct a barrier to protect the egg from breaking when dropped off the 2nd floor balcony of the 700 building
• right now there are no constraints or criteria
• but to get as many points as possible for the achivements one has to:
• make the barrier a certain size
• biggest: material fits into a paper box
• smallest: material fits into an altoid box
• make the barrier weigh a certain amount
• Brainstorm solutions
• first:
• shoe box, bubble wrap, tape, paper towels, tin foil, baggie, 2 shirts
• second:
• bubble wrap, tape, baggie
• third:
• pillow, tin foil, tape, baggie
• Identify materials to bring in for "Build Day" (block day)
•  2 shirts, paper towels, tape, baggie, phone box, bubble wrap, tin foil

Achievements:
Brainstorming-Create a sketch of one possible solution. Include labels.
-Create a sketch of another possible solution. Include labels.
-Create a sketch of a third possible solution. Include labels.
-Use a decision matrix to justify the approach you chose.



problem: there is a tie between design 1 and design 2
solution: look into how many achievements for each would be earned, and pick the one with the higher achievements

• Design 1: 12 achievements
• 2 out of 4 size
• 1 out of 7 weight
• 3 out of 5 drop
• 6 out of crack vs intact
• Design 2: 13 achievements
• 3 out of 4 size
• 7 out of 7 weight
• 3 out of 5 drop
• 1 out of 6 cracked vs intact

With all this information, in order to earn more achievements we should have picked design 2 instead of design 1!

Material Prep
-Generate a list of materials required for build day.

• 2 shirts
• paper towels (1 ft)
• tape
• (tape box together)
• bubble wrap (3 in X 3 in)
• phone box
• tin foil (3 in X 3 in)

-Document a plan to ensure materials are brought in on block day.

• Bethany came over to my house and we gathered all the materials
• We put all the materials into the box
• I put them next to my backpack the night before so I wouldn't forget
• I brought the materials to school with all my other lacrosse, and art stuff (big load)!!

Build Achievements

Material Size:

(your egg is not included in the material size)

(air is ubiquitous and not included in material size. "Rare" commodities like helium are.)

-Your materials fit inside a printer paper box

• A phone box is smaller than a printer box, so it fit in the printer paper box

-Your materials fit inside a shoe box

• A phone box is smaller than a shoe box, so it fit inside a shoe box as well

-

Material Weight: (your egg is not included in material weight)

-Your materials weigh less than 500 grams.

• Our box filled with materials weighed 326 grams which means it is below 500 grams

Drop Achievements

Drop Accuracy:

• Eventhough it says we hit inside the 3rd ring, I saw it to where we hit inside the 2nd ring, but then it bounced out to the 3rd ring.
• It is hard to keep something moving so fast to stay in one spot when it is dropped

-You hit the butcher paper!

-You hit inside the third ring!

-You hit inside the second ring!

Egg Resilience:

When we unwrapped the egg it was still completely intact, no cracks or anything!

-Your egg broke but the yolk remained intact.

-Your egg cracked but the yolk stayed inside and intact.

-Your egg cracked but was still together.

-Your egg didn't break in any way! (awarded three times)

-Your egg didn't break in any way! (awarded three times)

-Your egg didn't break in any way! (awarded three times)

Calculation Achievements

-Describe an aspect of the event using arithmetic.

• materials and weight
• weigh weight of solution and weight of egg

-Describe an aspect of the event using geometry.

• measure the size of the rings
• measure the height of the drop
• measure the angle of the drop to the center (in order to hit bullseye)

-Describe an aspect of the event using algebra.

• acceleration equations
• gravity, force, motion, velocity

-Describe an aspect of the event using calculus.

• relates to physics and newton's laws of motion

-Seek out additional instruction from your math teacher in support of a Calculation Achievement.

Communicate Results Achievements

-Create promotional materials for your design.

-Model your solution using CAD software.

-Create a multiview drawing of your CAD model.

-Dimension your multiview drawing.

Other Achievements

-Come up with a clever name Mr. Olson uses for an existing Achievment.

-Design an Achievement Mr. Olson approves for next year's Egg Drop Challenge.

-Suggest a redesign to the activity that Mr Olson confirms he will use for next year's Egg Drop Challenge.

Reverse Engineering: Functional Analysis

Standard Tape Measure


1. What is the purpose or primary function of the object?


Function...

• To measure items that have unknown dimentsions
• To measure the distance between items
• Make measuring a one person job
• metal hook allows the tape to be held onto the item and pulled out to measure the distance, or length of the item, etc
• Makes measuring easier!!

2. Make an educated guess as to how this product operates. Use simple machines’ terminology to explain the object’s sequential operation.


How it works...

• use a metal spring that is attached to the end of the measuring tape (inside the case)
• other end of the measuring tape has a flat metal hook
• hook on to one end of what you are measuring 
• turns measuring something to a one-person job
• when the tape is pulled the spring starts to unwind
• it keeps energy in the metal spring
• used to wind the tape up again
• the hold switch holds the tape at a certain point
• does this to stop the spring from unwinding
• when hold switch is released the spring unwinds and pulls the tape back in the case  

3. Identify the system inputs, intended product function, and outputs. Use powerpoint to create a "black box" graphic like the toothbrush example discussed in class.  

4. What mechanical components are visible?

Visible Components...

• The hold switch is the only visible component
• this helps to hold the spring inside so the tape measure doesn't randomly go back in the case
• if you release the button the tape goes back in
• Be careful it hurts!!!
• The flat metal piece on the end of the tape to make measuring a one person job is also visible
• helps to hold on to objects to measure in between distances

5. What is it about this device’s function that you cannot identify, because the mechanical components are hidden from plain view?

What's Missing...

• The spring on the inside is not visible
• supports the whole idea of how the tape measure stays out, and  how it goes back in with help from the hold switch and release switch on the top of the case
• The coiling of the tape is also not seen
• can't see how the tape wraps up within the case itself

Reverse Engineering: Product Observation

Product: Key Chain Tape Measure


1. What is the purpose or primary function of the object?

• To measure differnent items up to 3 feet long or high, etc
• Measure distances between objects
• The length can vary since the tape measure can be stopped at a specific measurement up to 3 feet with the button on the top
• It can be placed on a backpack since the tape measure has a key chain attached to it
• makes the product more available and convinient

2. Make an educated guess as to how this product operates. Use simple machines’ terminology to explain the object’s sequential operation.

• For a tape measure I assume that there is a coil on the inside

3. Identify the system inputs, intended product function, and outputs in a table (power point works well because you can save your slide as an image).

4. What mechanical components are visible?

5. What is it about this device’s function that you cannot identify, because the mechanical components are hidden from plain view?