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Math Spinner Toy

by christinachun, published

Math Spinner Toy by christinachun Nov 16, 2013

Challenge Winner

Description

Addition, subtraction, multiplication and division!

Recent Comments

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Those are some great suggestions and add-ons! Thank you so much for the feedback. I'll work on them soon!

Christina: Thanks for sharing this wonderful design.

Here are some suggestions for tweaks and add-ons from teachers at the VSTE13 conference. (Virginia Society for Technology in Education)

-A wheel without a zero so that the two digits answers can be 5 instead of 05. Reduce confusion for students learning to write numbers.

-Center pieces sized so that there can be 2, 3, 4 and 5 wheels. Teachers thought this would be a good tool for place values. So two wheels would give a tens columns and a ones columns. 3 wheels would give hundreds column, etc.

-A wheel that has a decimal point and/or a comma. Place values and decimals.

-A wheel with symbols for dollars and/or cents.

My suggestion is to size end caps that will fit on PVC pipe so that teachers with small 3D printers could still create large math spinner toys by cutting PVC to size. Show millions, billions and trillions.

I had a little bit of trouble with getting the end caps and center to press fit together. Ended up using glue. Wonder if there is a design that would be a little more forgiving for printers that aren't calibrated perfectly. Ideally it would also be able to be easily disassembled so that the wheels could be swapped around for different activities. Maybe a slight bevel on the interior parts of the end caps?

http://instagram.com/p/htbQTSE...

http://instagram.com/p/hrcS1Rk...

Can you download the mathSpinnernumbers_fixed file and see if that fixes the problem? If so, I'll run the rest through netfabb.

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Instructions

Small Math Spinner
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Print 2 end caps, 4 numbers, one math symbol, one equals and one center piece. For the original small size, you'll have to rearrange the sections for division.

Large Math Spinner
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For those with larger build platforms, you can print the centerLarge and print 6 extra number sections to do larger math problems.


12-7-2013 - UPDATE
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I added 'fixed' files in case your printer sees the models scaled down. I didn't detect an issue on my end but I re-exported them out anyway & then triple checked in netfabb.

Comments

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DesignMakeTeach on Dec 11, 2013 said:

Christina: Thanks for sharing this wonderful design.

Here are some suggestions for tweaks and add-ons from teachers at the VSTE13 conference. (Virginia Society for Technology in Education)

-A wheel without a zero so that the two digits answers can be 5 instead of 05. Reduce confusion for students learning to write numbers.

-Center pieces sized so that there can be 2, 3, 4 and 5 wheels. Teachers thought this would be a good tool for place values. So two wheels would give a tens columns and a ones columns. 3 wheels would give hundreds column, etc.

-A wheel that has a decimal point and/or a comma. Place values and decimals.

-A wheel with symbols for dollars and/or cents.

My suggestion is to size end caps that will fit on PVC pipe so that teachers with small 3D printers could still create large math spinner toys by cutting PVC to size. Show millions, billions and trillions.

I had a little bit of trouble with getting the end caps and center to press fit together. Ended up using glue. Wonder if there is a design that would be a little more forgiving for printers that aren't calibrated perfectly. Ideally it would also be able to be easily disassembled so that the wheels could be swapped around for different activities. Maybe a slight bevel on the interior parts of the end caps?

http://instagram.com/p/htbQTSE...

http://instagram.com/p/hrcS1Rk...

Anonymous on Dec 11, 2013 said:

Those are some great suggestions and add-ons! Thank you so much for the feedback. I'll work on them soon!

entropygun on Dec 7, 2013 said:

these stl files must be in inches? I just tried to print the numbers and Slic3r printed it tiny... like 1mm diameter. gonna try scaling it up

Anonymous on Dec 7, 2013 said:

Can you download the mathSpinnernumbers_fixed file and see if that fixes the problem? If so, I'll run the rest through netfabb.

entropygun on Dec 7, 2013 said:

this is awesome. thanks for sharing!

jantonio on Dec 3, 2013 said:

Excelente regalo para mi hijo. :)

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