Bridget and Austin are on their way home from school whey they see
their new neighbor getting out of a vehicle in a wheelchair. As
she prepares to go into her house, Bridget and Austin offer to help.
"Why thank you," she says, "but that's OK because
I have wheels and an axle, and a ramp on the front of my house to
give myself a mechanical advantage." The kids look puzzled
and the person explains how these simple machines make her life
easier. Bridget and Austin stop off at Alex's garage and try to
impress him with their limited knowledge of simple machines. Alex
asks if they know how many simple machines are in the Soap Box Derby
racer Austin is building. The kids run home to check.
the Teacher Guide (PDF file) Lesson begins on page 63.
Activities for Simple Machines