Homeroom
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Star Math Test Today!
Community Service Due This Week!
Bring me completed sheets.
Total up your service.
If you need signatures - get them.
Grade 7 & 8 Lesson
Do Now:
Homework:
Today’s Agenda:
Build an “I” Beam
As we have learned, shape can be an important factor in how well a material resists flexural stress.
While waiting for glue to dry:
Clean out your project folder in the filing cabinet.
Do not throw out any community service info.
Review the truss designs in the Bridge desing competition in GC
Look in the “2016 Bridge Design Tips” file atatched to the assignment.
Sketch possible bridge design you can build for the competition
Don’t forget to review the rubric requirements.
finish Presentations:
P3 (3)
P5
P7 (2)
Finish Box Truss
Basic Box Truss: Building skills
Here is a plan for the box truss.
it is 5 cm high, 5 cm wide, and 20 cm long.
work on a “placemat’ of paper or carboard to keep glue of tables.
use a small 3x3 card for glue.
use a toothpick or a small piece of pasta as a “glue paintbrush” to apply glue to joints.
use glue sparingly - excess glue will wet and weaken pasta.
Avoid “Compound Joints” in your construction