Josh MirandaPhysics Teacher

Revere High School

3 levels of physics: AP, Honors, and College Prep

Projects and activities for most units◦ Start unit with in-class activity◦ Follow up with take-home project at end of unit

Paper describing EDP and blueprint along with project

In-class activity using straws and tape◦ One class period to design, build and test◦ Groups of 5 or 6 (classroom limitation)

Unit project to build bridges out of toothpicks◦ Students were given approximately two weeks

In-class activity: launch a ping pong ball by building a catapult out of craft sticks (distance competition)

Unit project: launch a ping pong ball across the room, over a wall, into a bucket◦ Unlimited materials/supplies

In-class activity: build a device with a minimum of 3 steps to accomplish a simple task using materials in the classroom

Unit project: at least 5 steps to pass a golf ball around the room from machine to machine◦ Receive the golf ball from a height of 2 inches◦ Deliver the golf ball to the next machine at a

height of 6 inches

In-class activity: create a device to safely catch a dropped egg◦ 4 pieces of paper◦ 5 straws◦ 1m of tape

Skipped unit project

Mousetrap cars◦ All classes◦ Strict design requirements◦ EDP more important◦ Covered multiple topics◦ Initial Design and paper◦ Redesign, paper and presentation

Honors◦ Initially science fair projects◦ Design/redesign ongoing through the end of the

year Independent study students

◦ Two groups: Reduce energy lost through showerheads Design an RFID system for use in the school

Josh MirandaPhysics Teacher

Revere High School

•Student Response to using CAD

•My Experiences

•Mastering CAD vs using CAD

•Expectations

CAD can be an effective tool for high school students in the engineering design process when introduced carefully, and

given realistic expectations.

• Students often find CAD intimidating

• Learning curve can be very steep for first-time users

• Can be viewed as the boring or tedious part of the design process

• Good engineering can sometimes be lost in getting the CAD details right

• My experience – mostly students involved with the NU FIRST robotics team

oStudents from Boston, Brookline, and RevereoRange from freshman through seniorsoMix of “veteran” team members and “rookies”

• “when can we stop CAD-ing and get to the fun stuff?”

• First time CAD users – sometimes a (strong) push is needed

• Design details skipped to perfect aesthetics of design

Planning stage

CAD work begins

Design Review

Manufacture

Assembly

Final Product

• Mastering CAD vs Using CAD

• Students do not have to be experts to effectively use CAD in design

• For a Capstone project or course, CAD should be used as a tool – or method to solve a problem

• Students can start with only basic proficiency and then learn more as necessary for their designs

• Students will not become CAD experts in anything other than a CAD class

• Students should recognize when CAD can be used as a tool to solve a problem and what CAD is capable of

• Even just effectively using the 2D sketch features to adjust designs is a great start

• Most designs can be made using simple 2D sketches to create 3D models and assemblies