Project Lead The Way!

[Adam Y.]

2.) A wall is made of an outer brick (R=0.3ft[^2]*hr*[degree]F/BTU), a piece of plywood (R=1), 6” of insulation (R=25), an air gap (R=4), and drywall (R=0.5).

It really doesn't seem that hard. I just need to be taught how to do it. Anyway, most of my physics information I learned from books long before my physics teacher started teaching it. I started annoying my friends when he would start teaching a formula and oddly enough I just happened to bring that book to read that day.

[dez250]

that is probablly one of the simpelest questions we got for a homework, if im feeling up to it, maybe in a little while ill put the equation and answer to Q.2 and question 3 which uses that answer to find something else...
~Mike

P.S.~Resistivity is = to 1/Conductivity LOL

[Adam Y.]

P.S.~Resistivity is = to 1/Conductivity LOL

Hmmm.... I knew that for electronics and electricity. I didn't know it worked in other ways. It makes sense though. My best guess is to add all the r numbers up and then invert it.

[dez250]

good job adam thats how that question would be done... i will add my work, with answer to Q2 later along with q3 which will show how much you do learn from just one day in POE.

~Mike

[Adam Y.]

good job adam thats how that question would be done... i will add my work, with answer to Q2 later along with q3 which will show how much you do learn from just one day in POE.

Hmm.. I really did not know that conductivity and resistivity were that similar for materials and electronics. POE would be a cool course. I hope my advisor gets it into my school.

[ChrisH]

Originally posted by Adam Y.
Hmm.. I really did not know that conductivity and resistivity were that similar for materials and electronics.

There are many times that mathematical equations used in one area of engineering turn out to represent problems in another area equally well. You just have to change the units. This is particulalry true of flows, whether they be flows of electrons, water or energy.

[dez250]

Here is the work and answer for Question 2, along followed by Q3.

Q2 Answer:
R=Coefficient of Resistivity
U=Coefficient of Conductivity
R=1/U
R(total)=R1+R2+R3....
R(total)=(0.3ft[^2]*hr*[degree]F/BTU)+1+25+4+0.5
R(total)=30.8ft[^2]*hr*[degree]F/BTU
U(total)=1/30.8ft[^2]*hr*[degree]F/BTU
U(total)=.032 BTU/ ft[^2]*hr*[degree]F

Question #3
3.) Use the answer to problem 2 to find the heat load on an air conditioner if a house is built of walls like these. The house is 20 feet by 40 feet with 8 foot tall walls, and you may consider the roof has the same construction as the walls (for the purpose of making this problem simpler). Neglect any windows and doors.


That question is a 2 part problem, found everyday while trying to find the load on an air conditioner. This type of problem was taught in class over a 3 day span, after learning about thermal conductivity.
~Mike

[Adam Y.]

There are many times that mathematical equations used in one area of engineering turn out to represent problems in another area equally well. You just have to change the units. This is particulalry true of flows, whether they be flows of electrons, water or energy.

Thanks. You learn something everyday. My physics teacher told me about this also. You can use fluid dynamic equations and use in air problems. You just change the constants.

[dez250]

OK lets put this back on track, anyone who has heard of or has interacted with the Project Lead The Way pre-engineering program for high school, please answer the following questions:
The questions i have are:
-who's heard of it?
-who has it in their school?
-what classes have you taken (if any)?
-also what experience have you gotten from it?
-What would you say to others thinking about taking any of the classes?


Anyone can chime in if they want to...

~Mike
Project Lead The Way Homepage

[Steve S.]

Originally Posted by dez250

OK lets put this back on track, anyone who has heard of or has interacted with the Project Lead The Way pre-engineering program for high school, please answer the following questions:
The questions i have are:
-who's heard of it?
-who has it in their school?
-what classes have you taken (if any)?
-also what experience have you gotten from it?
-What would you say to others thinking about taking any of the classes?


Anyone can chime in if they want to...

~Mike
Project Lead The Way Homepage

We have PLTW in our district. Ive taken DDT and taking CIMS this year. Overall its been great, although this year we haven't been able to use our mill because something is up with our air lines
Hopefully POE and Digital in senior year b/c of a full sch. next year

I would recommend getting into the PLTW Courses, its a great experience for the most part, although Ive heard different from people in other areas.......but anyways, definitely check into it.

And for those that dont have it, go to the tech dept and administration at your school and see what can be done to get involved....

[Matt Attallah]

Oops

Ment for a nother topic...

Musta been the late night time that threw me off

[Yan Wang]

Matt, I think you wanted to reply to another topic...

[234smidget]

[quote=dez250]As the name states this thread is about PLTW the Pre-Engineering course for highschool, located out of Clifton Park, N.Y.
The questions i have are:
-whos heard of it?
-who has it in their school?
-what classes have you taken (if any)?
-also what experiance have you gotten from it?
-What would you say to others thinking about taking any of the classes?

Heres the website for PLTW http://www.pltw.org

~Mike[/QUOT

we have pltw at my high school(perry meridian high school) i have taken the first course but i am going to take courses next year too it has helped me alot and it does help in robotics because some of the team members has no experience with it so we who have taken the class can help also during robotic season at night when i have freetime i mess around with autodesk and it helps me work faster or understand better the next day when i have the class
i recommend this course especiall for future enigineers my teacher says college students are using the same software now so if you have this class now if will definitally help you when you get to college

[AndyB]

Originally Posted by dez250

As the name states this thread is about PLTW the Pre-Engineering course for highschool, located out of Clifton Park, N.Y.
The questions i have are:
-whos heard of it?
-who has it in their school?
-what classes have you taken (if any)?
-also what experiance have you gotten from it?
-What would you say to others thinking about taking any of the classes?

Heres the website for PLTW http://www.pltw.org

~Mike

-Introduction to Engineering and Design
-Principals of Engineering
-Was going to take Computer Integrated Manufacturing but they canceled it on us
-3D Modeling (dont remember if that was PLTW)
-Technical Drafting

From taking these classes (especially IED), i learned the Autodesk Inventor program and was able to complete an entry for this year's competition. From 3D modeling, i learned the 3D aspect of cad and learned some more visual thing that inventor offers. POE is an awesome class from what i hear (im taking it next year). They have made Rube Goldberg devices, mousetrap cars, and lots of cool interesting things. Technical Drafting really introduced me into drafting and taught me AutoCAD.

[1493kd]

I teach PLTW DDP and next year will be teaching Civil Eng. And Arch class...

I love teaching DDP, it is a great class and can give you valueable experience.. The point of the class is not to train you on a CAD program.. The point is to train you mind to problem solve, brainstorm, and use you imagination. (think outside the box)

Like any class the course can depend on how good a job the teacher does at inspiring the students.

Also
Many of my students did not select the course and were just placed in the class, but now I have a number of students really interested in a tech ed. and want to persue further options. If they never had the chance then who knows what they would have ended up doing.

I also have students that arnt your typical PLTW students. Students with 3rd and 4th grade reading levels who excel with CAD and have now found something that they can do which puts them on a level with their peers.