Centroids part 2 !!

Megan and I worked together on this project with help from Erik for full understanding! This is what we came up with: ( enjoy our fancy funny photos ) 

Manila Folder Bridge Design-Build Challenge!

Criteria:
Build a structure that can support as much weight as possible over a 18" gap.
(Note: we will use magazines for "weights" and our "gap" will be positioned between two tables)

Constraints:Part 1

• Materials:
• 2 "letter size" Manilla folders
• 2' of masking tape (may not use any piece longer than 6")
• Weighing:
• Magazines will be used as "weights"
• Your "score" for our competition is determined by how many magazines your structure supports!
• Magazines will be added to your structure one at a time until "failure" is achieved.
• You may place magazines anywhere on your structure as long as:
• All magazines must rest between the two vertical edges of the gap your bridge is spanning (magazines must be over the "gap").
• No magazines may touch the tables (magazines may not be piled up to "self support" themselves).
• Construction Practices:
• Only one end of your design may have a "pinned" connection to the table top (ie. taped). The other end must act as if it were on a "roller" connection (ie. laying on the table top).
• Manila folders may not be layered more than 3 layers thick at any location.
• Parallel structural members may not touch directly (they can be connected via non parallel connection members (ex. a "ladder" style design) 

Day 1:

We won this design build challenge! Megan, Alexis and I successfully held 56 magazines on our structure! Beating the record! We also happened to be the only team to complete this task on the first day, all other teams did not finish. Our design was unique and apparently very successful!! Even though everyone always doubts the girl group, and numberous times accused us for cheating, we still won :) 

4th Annual Mousetrap-Racecar Races

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):

1. Completing the task on time

2. Improving distance though trials 

3. Making it the least farthest out of everyone 

4. Using good required materials 

5. Having more then 1 girl in a group

6. Most changes between trials of car

Feedback:

Next time we will improve our technique with the string and where it is placed. Also change our tactics to greaten the lengthen of the distance of our car. The different wheels chosen by different teams also seem to differ results, maybe we will change our wheel choice! My favorite part was how our distance improved after trial and error, it was a great feelings having our car go farther our second and third time trying!

We completed the task successfully and on time, next time we will win! 

Clean Up Stage: 
Megan, I and only a handful of others were the only ones at first to clean up the classroom. I swept the the whole classroom and after getting slightly annoyed made everyone stop playing minecraft and help me! Then we successfully cleaned the whole class.

  

Design Build Challenge 02- Marble Drop Madness!!

Todays "Design-Build"challenge uses

•14 straws

• 10 toothpicks 

• 3 paper cups

• 3 feet of masking tape

• 1 round marble 

Goals:

Realse 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 I to a cup on the floor. The winner is the teams who's cup is to cared the furthest 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. 

Results: 2nd= .9

My group placed 2nd with a distance of 4 squares on the floor. We completed the marble challenge with the above materials on time, our build just wasn't long enough. 

Cardboard Canoe Challenge

I am claiming 15 achievements! 

2 years ago when I was a freshman in intro to engineering we did this challenge and weren't very successful. This year as a junior in Principals, I am trying this challenge again. This time I have a lot more knowledge on what works best and what doesn't. Hopefully, my team and I will be very successful this year.

Design 1^ (favorite design so far) 

Design 2^

Design 3^ 

Sketches^ 

20 ideas^ 

Achievements: 

•We are designing a cardboard canoe that a student must sit and without it sinking and race to the other side of the pool. 

•Personally I give our big brain to Alexis in our team

•Surface area and constraints 

 

•Select an approach: 

Since Alexis and I are the ones who have taken Engineering before and have both done the cardboard canoe challenge we combined our ideas of what we know what's and what we know doesn't. We both had remembered the canoes that won the previous years in our classes, so we combined those ideas to make ours. We used feedback and adjustments to create the design we thought would be most successful. That would be design number 1 above. 

 

FINAL OUTCOME- We won!!!!!! Girls team, G4, pulled a win! Even though we didnt have much time and had to change our canoe at the last minute to a complete box, we still won. The "box" team that everyone has doubted and picked fun of, beat everyone!! A great accomplishment. Yes, we used to rope, but in past years other teams have done that too, so we just happen to carry the tradition :). We were able to go back and fourth twice and stand up! Finally our canoe had had enough and fell to pieces, but it was great while it lasted! So far my group and I have no exactly figured out how to put up the videos we had taken, but we will try to upload them to youtube and I will put them up!

 

Acheivements!!!!!!!!!!!!!!!!!!!!:

1. Standing Up (balance master) 

2. Winning The Race

3. Being a Team of ALL Girls

4. Catching a Yellow Kick Board

5. Doing 2 laps there and back ( farthest )

6. Rope to pull boat across

7. Completely covered in duct tape on time

8. Boat surfboard with walls

9. Very good video/photographer (Megan)

10.Had walls above 3" tall

11. Transformer: towards the end our boat did start to sink, we turned it into something Ally could still float on!

12. We stayed in the water with our canoe for all of the competitions 

13. Not cheating or hurting other teams 

Getting the cardboard all on our own

14. Beating Mr. Olson when he swam across  

15. Being able to change our original idea last minute and still win 

Our proof: http://youtu.be/99J5KpYBPZM

http://youtu.be/ayykJDQL1Ik

Wheel and Axle Worksheet!

Wheel and axle worksheet, done as much as I could. 

First Blog Post For 2013-2014 School Year

Hi everyone! My name is Hanna and this is my blog for Principals of Enginnerring! I am involved in a number of things through my high school, but my main commiment besides school itself is Coronado High School Cheer! I am apart of the Coronado Varsity Cheerleading team, my second year on varsity as a junior. I have been cheering for my community for about 8 years now. Every year is a different experince and a different adventure. But this school year has been my favortie most memorable year yet. I love my team. Coronado High School Cheer Page

Levers Worksheet!

1st, 2nd, and 3rd class levers