What materials/supplies will the teacher need to supply?
pre made demo of non braced unit.
Hammers, nails, wood, tie line
What object/product shall the student end up with?
Diag braced 3 sided frame
Notes will include:
How legs support platforms.
How diag. bracing keeps legs upright.
how to figure length of diag bracing
Process, notes, outline, descriptions, script for teacher.
Set up small sample of “house of cards” using 1×3.
Show how easy it is for this to fall over.
in groups, Have students build their own.
Ask them to create a device to keep it from collapsing.
Add tie line as diag. bracing. Then show how it stays up in one direction.
SHOW TRIANGLE FORMED
Ask how to keep from falling the other way. (looking for two answers here)
1) add second tie line from other side.
2) make diag. bracing stiff.
Add tie line the other direction.
If time allows. Otherwise, cover in the future.
How do we figure out how long the diag. bracing needs to be?
Relate this to future classes via?
We have been, and will do more, placing diag. bracing on our platforms.