Material Science Engineering eVOL9 Summer 2015

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Presentation transcript:

Material Science Engineering eVOL9 Summer 2015 Making Bouncy Balls Material Science Engineering eVOL9 Summer 2015

Task Everyone is going to make a bouncy ball! Record the recipe that you use to make the bouncy ball

Steps for Everyone (2 Different Cups) Borax Solution Cup: 2 tablespoon of water ½ teaspoon of borax powder Stir until dissolved Ball Mixture Cup: 1 tablespoon of glue Variable: Borax Solution Variable: Cornstarch

Brainstorm Ideas! As a team, determine a different recipe for each person on your team Write this recipe down on your paper What do you predict this recipe will do to your bouncy ball Bounce High, Bounce Low, Go further, etc…

Build a Prototype! Follow your recipe to make your bouncy ball Make a bouncy ball for each person on your team Ensure that you follow the recipe closely!

Tests for your bouncy balls Testing your Bouncy Ball Run through a series of tests Record the data for each of your bouncy balls, in each test Tests for your bouncy balls How high does the ball bounce when dropped from 4 ft? How many times does the ball bounce when dropped from 4 ft? How far/long does the ball bounce when dropped from 4 ft?

Report! Which ingredient combination provided the highest bounce? Which ingredient combination provided the greatest number of bounces? Which ingredient combination provided the longest bouncing time? What are some observations of the balls that did not perform well in this test?

Reflect! What could you have improved upon? What could you have done better as a team? What concentration of what ingredient worked the best? Worst?

Really Cool Videos https://www.youtube.com/watch?v=RkLn2gR7SyE https://www.youtube.com/watch?v=f2XQ97XHjVw https://www.youtube.com/watch?v=3CgKmfInv_k