1. In your agenda: Quiz 10/22  Do Now: Write this question in your do now book. We will watch a video then answer the question.  What factors contributed to the Tacoma Narrows Bridge Collapse?

2. Building Toothpick Bridges Study Guide

3. 1.  Our objective was to use the scientific method to build the strongest bridge possible from toothpicks and glue.

4. 2.  Before building the bridges, we researched different types of bridges, looked at pictures, and did a shapes lab.

5. 3.  Hypothesis

6. 4.  Experiment

7. 5.  Beam, arch, suspension

8. 6.  $1,550,000 or  $1,550,000.00

9. 7-11.  Land = $500,000  Paper set = $40,000  Lumber (10) = $10,000  Welding material = $850  Cable = $500 / cm

10. 12.  $40,850

11. 13.  35cm

12. 14.  15cm

13. 15.  15cm

14. 16.  Architect fills out order form.  Accountant writes check.  Project director signs order form and initials check.  Transportation Chief goes to warehouse to get supplies.

15. 17.  The Transportation Chief counts and checks the lumber to make sure that it contained the correct amount and that none were defective.

16. 18.  Many answers here. Let’s discuss them.

17. 19.  The Accountant keeps a balance sheet and records each check to keep track of money spent and money available. He/she makes sure the bridge is built within the budget.

18. 20.  The Architect’s plans are important so that the builders know how to build the bridge before they start.

19. 21.  If your hypothesis is incorrect, you should go back and observe and research more, then make a new hypothesis.

20. 22.  Project Director:  Keeps a journal of company progress  Makes sure all members are doing their jobs  Signs and approves plans, checks and order forms  Keeps site and folders neat and organized

21. 23.  Architect  Designs bridge, draws plans  Shows others how to build the bridge making sure it is built to plans  Keeps inventory of supplies  Orders supplies

22. 24.  Accountant:  Writes checks to go with order forms  Keeps a balance sheet making sure account balances  Meets with auditor if necessary  Helps build the bridge

23. 25.  Transportation Chief  Delivers, picks up supplies from the warehouse  Makes sure the warehouse gives the correct supplies  Helps build the bridge

24. 26.  Carpenter  Builds the bridge according to plans  Consults with architect  Supervises other members that are building

25. 27-30.  Let’s list these on the board.