Students will make a simple mechanical hand with a trigger connected to a hinge. Once complete, students can test the ability of their hand by trying to pick up as many straws as possible. Extra class time (and there should be plenty!) can be devoted to further testing and redesigning to make the best mechanical hand possible!

Step 1: Materials

For this design, you will need:
(and extra for redesigning)

15 Craft sticks
Craft cubes
Round cube beads
Part of 1 Straw
2 Skewers
2 Rubberbands
Hot glue

And a box of straws for the challenge!
<p>fantastic idea...its quite helpful especially for the elderly people, so thumps up..!!</p>
<p>does this actually pick things up? Is it a lever?</p>
<p>This is nice</p>
<p>It was great to do it, and I made one only enhacement, that I took a picture. Thank you... I have a lot of fun...</p>
Wow, this is awesome! Thanks for sharing - it's really cool to see others actually make use of these project plans :)
<p>extremely awesome</p>
<p>Simply Wonderful.</p>
That's awesome
<p>Awesome! This would work great for a puppet hand :D thanks for sharing!</p>
<p>Good work! Maybe you could add a video.</p>
<p>So great!! Thanks for posting. </p>

About This Instructable


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Bio: I create project-based engineering projects for my after school program, which is what you see on Instructables. I also develop hands-on science curriculum for a ... More »
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