As always, we enjoyed all that Mr. Michael from Rocket Science for Kids had to teach us at our Lego Duplo STEM event!  We learned about using gears to make things rotate and experimented with switching out large gears for smaller gears to see what would happen.  The kiddos then built bubble makers.  The gears on the bubble maker acted like a mixer...they cranked and cranked agitating the water and soap to create tons of bubbles!  It was so much fun watching their little faces as water flew and bubbles multiplied!