Robin, at Around the Island, has challenged us to post photos that remind us of summer each Sunday. She's not looking for professional quality photos (although hers are), just something fun.
Daughter and I took a bike ride yesterday to geocache in a new park, Arrowbrook. We've driven by this place many times on the way to a favorite pizza place, and never registered that it was an "official" park (dedicated in Nov 2010, so pretty new). It was a puzzle cache and we were successful at the first 3 puzzles, but it was blasted hot so we came home to think about the others. We saw lots of dragonflies and damselflies, and learned about the butterflies that live there. Apparently the water portion of the park has been developed as an "Enhanced Extension Basin," a device that soaks up what would have been run-off from developed areas and releases it back into the watershed at a more sedate pace, consistent with a more healthy environment. Who knew?
and to demonstrate that we are ALMOST FINALLY out of school,
here is the Rube Goldberg project for Physics that
represented her final A or B. (A if it worked, B if it was complete, but didn't)
Assignment, to design and build a working contraption
a la Goldberg using a number of simple machines.
They had to include a pulley, lever and fulcrum, inclined plane, and wedge.
The way this one works:
The string on a pulley releases a hammer which hits the base of
a launching point, flinging the marble into a funnel.
The marble whirls around the funnel, drops down to nudge a
car, which goes down the ramp, hitting
a lever which knocks over a block.
The block releases the balloon, which as it rises,
makes the connection for the two circuits,
and the light goes on!