1.Pass in your homework assignment from last week (make sure your name is on it). 2.Solve the following problems in your notebook (date today’s work) 1.” is the symbol for _________ 2.’ is the symbol for _________ 3.1’ = ” 4.2’ = ” 5.3’ = ” 6.4’ = ” Scaled Drawings I ” + 6” = ’ 8.3” + 9” = ’ 9.1” + 11” = ’ 10.1’ – 11” = ” 11.2’ – 9” = ” 12.3’ – 6” = ” INCHES FEET

Scaled Drawings This Week’s Objectives: Select your final design (Step 3) Create scaled drawings (graphic models) of final design (Step 4a) I - 5

a.Compare the possible solutions based on criteria and constraints a.Compare pluses and minuses of each design b.You should have at least 2 possible designs from Step 2 – Brainstorm and Research b.Choose the best solution Step 3 – Select an Approach I - 5 Outcome: Sentences, Paragraphs, Lists

a.Graphic modeling – scaled drawings b.Mathematical modeling c.Physical modeling Step 4 – Simulate the solution I - 5 Outcome: Drawings, Equations, Model

a.What improvements do you want to make? b.What didn’t work about your design that you need to change? Step 5 – Refine the Design I - 5 Outcome: Sentences, Lists, Drawings

a.Communicate the final solution through detailed documents i.Engineering drawings ii.Design reports b.Present the final solution to appropriate audiences Step 6 – Create a Design Proposal I - 5 Outcome: Sentences, Lists, Drawings

I - 5 Quiz Tomorrow Definition of engineering, 6 design process steps (order), measuring using the 16-scale What is engineering? The systematic application of mathematical, scientific, and technical principles that yields a tangible end product that meets human needs or desires.

I - 5 Architect’s Scale How many different scales are on the architect’s scale?

I - 5 1/16”1/8”1/4”1/2” 1” 1 3/16” 1 3/8” 1 1/2” 1 3/4” 3/4” scale

I - 5 ABCDEFGH A = B = C = D = E = F = G = H = 3/16” 7/16” 15/16” 1 9/16” 2 1/8” 2 5/8” 3 3/8” 16-scale

I - 5 Notice size and location of zero Use numbers of the same size/location Using the inches: 1.Count the number of lines 2.Divide 12 by that number 3.The dividend is what fraction of an inch each line represents Using other scales

I - 5 ¼” = 1’-0" On this scale, ¼” represents 1’ on the 16- scale. Using other scales 2’-0” 4’-0” 6’-0”

Always use FEET-INCH notation 6’-0” – NOT 6’ 5’-6” – NOT 5’6” The ¼”- Scale 1’-0”3’-0” 5’-0” 5’-6”0’-6” I - 5

2’-6” The ¼”- Scale 12” 4’-3”3’-9”

I - 5 D = 6’-7” ¼”-Scale Practice A B C D E F A = 1’-0” B = 3’-0” C= 4’-3”E = 10’-11” F = 13’-11”

Homework Complete the ¼”-scale and 1/8”-scale worksheet Study for Quiz I - 5

Sources ITEA “Colonizing the Moon Challenge” Draft Document curriculum Wright, R. Thomas. Technology. Muncie: G-W, I - 5