at Tuesday afternoon we did a technology challenge it was called marble run, the goal was to make a marble run as long as possible, the materials you will need to make this was: 25 straws some cor-flute pins and cardboard. so our plan was to connect the straws and not make it to steep, so we pined the straws to the cardboard. once it was time to test it ours took 25 seconds to go all the way down.in my experience marble run was harder than i thought. NASH
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