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1. Make four pinball tubes by cutting four rectangular sections and folding them into three lengthwise.

Use as much tape as needed to hold tubes together.

2. Get a box with a big side to hold all the tubes on an angle.

3. Using double-sided tape on one side of the tubes, stick them at a slight angle on the side of the box.

How to Play:

1. Cut a bunch of small straw bits to use as obstacles, then place them on the tubes.

2. Roll the ball down it. What variations of straws make it faster/slower? Time yourself and see.

<p>Sounds fun! Thanks for sharing!</p>

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