1. Bridge Challenge

2. Types of Bridges
Use the class set handouts on Bridge Basics to fill out the chart in your notebook.
SKETCH
PROS
CONS
Truss
Beam
Suspension
Arch

3. Types of Bridges

4. Examples of Truss Bridges

6. Toothpick Truss Bridge
Your Truss Bridge will be constructed out the following materials:
1 plastic Bag of Toothpicks (approximately 500)
Elmer’s glue
Your bridge will be placed on top of two tables 1 foot apart. Dictionaries will be placed underneath the bridge on either side.
You will work in pairs. NO GROUPS larger.

7. Toothpick Bridge Grading Rubric80 60 40 20
Write Up
All components of write up are complete
Missing no more than 1 component
Missing no more than 2 components
Missing no more than 3 components
4 or more components missing
Following Directions
Truss bridge built out of only toothpicks and glue
Bridge not built at all or other materials included
Cooperation
Worked cooperatively and respectfully all days of construction
Worked cooperatively and respectfully at least 4 days of construction
Worked cooperatively and respectfully at least 3 days of construction
Worked cooperatively and respectfully at least 2 days of construction
Group was unable to work cooperatively most days to build a bridge
TOTAL ASSESSMENT POINTS
_____/240

8. Paper Tower Challenge
Your group will be constructing a tower made out of only 2 pieces of printer paper and 6 cm of masking tape.
You can make one support beam that touches the table, but no more!
Your tower cannot be taped to anything- it must be free standing

9. #60 Continued
Draw a sketch of your final paper tower design.