
Brace Yourself
Was $14.99
SAVE 50%
$7.50
{{option.name}}:
{{selected_options[option.position]}}
{{value_obj.value}}
How will an earthquake, simulated by shaking, affect a "building" made of linked squares? How can the square "stories" be cross-braced to prevent the "walls" from collapsing? What dangers are there in building above a garage?
Show More
Show Less
Price History
$14.99
$7.50
(-$7.49)