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How To: Build a Baking Soda and Vinegar Powered Boat

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See the whole project over at: Theottolbox.com

As the weather gets warmer and the summer days arrive, try your hand at making this neat baking soda and vinegar powered boat! Get outside, enjoy the fresh air and marvel at the wonders of simple engineering with your new creation.

Supplies:

  • Styrofoam egg carton (or other plastic-coated material)
  • Scissors
  • 1 Plastic Bottle Cap
  • Electrical Tape
  • Two 2 inch Pieces of Drinking Straw 
  • Baking Soda
  • White Vinegar

Instructions:

  1. Cut out a small triangular boat shape from your styrofoam egg carton or similar material.
  2. Use the electrical tape to take down the plastic bottle cap to make a small bowl on top of your boat.
  3. Tape your two pieces of drinking straw side by side, with one end sticking into the bottle cap and the other sticking out. Please be sure that your straws are secure, and parallel to the water.
  4. Fill the bottle cap with baking soda.
  5. Place the completed boat in water.
  6. Pour vinegar into the bottle cap, and watch your boat sail!

Engineering Craft Ideas

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We know December has passed, but the snow just means it’s a perfect time to stay indoors, grab a hot chocolate and craft!

Tinkering Trees

The Tinkering Trees activity is simple, fun, AND festive!

Supplies:

  • 4 washers per tree, decreasing in size
  • Multiple 5/8″ diameter bolts in different lengths for different sized trees (one per tree)
  • 5 x 5/8″ size nuts

Instructions:

  1. Start with a bolt, then alternate stacking different sized nuts and washers to build a tree shape
  2. For extra fun, paint the materials a forest green colour, and add dots of red, blue and yellow as twinkling lights. Add a paper star or angel, and you’re all set for Saint Nick!

Mini-Catapult

Take your snowball fight indoors with this mini “snowball” shooter!

Supplies:

  • 7 popsicle sticks
  • 3 rubber bands
  • A bottle cap
  • Mini marshmallows
  • White glue

Instructions:

  1. Glue 5 popsicle sticks together.
  2. Stack remaining 2 popsicle sticks together and wrap a rubber band around one end.
  3. Pull the two popsicle sticks apart and wedge the stack of 5 popsicle sticks between them.
  4. Secure the catapult together with a rubber band.
  5. Glue a bottle cap upside down on the end of the top popsicle stick.
  6. Place a marshmallow snowball on the bottle cap, pull back, and let it fly!