This model demonstrates how adding different fractions adds up to 1 even though they have different denominators. The model was designed as a manipulative to be used in a middle school or high school math classroom to help students understand fractions.
-S. Fredrick, 12/15/17
Need to pause printer to change filament to have different colored text on the fractions. A pause pad may be needed. Some STL files attached already have a pause pad.
Nozzle Temp: 220
Bed Temp: 85
I designed this model by coming up with an inner radius for my base. I then used an equation to determine what radius my fraction pieces should have in order to fit in the base. For the prototype, the base had a radius of 20 and the fraction pieces should have a radius of 19.3. The final version has a base with a radius of 40 and the fraction pieces should have a radius of 39.3.
*not all of the pieces were designed with this radius due to challenges. and not all the pieces have the radius that was input into Rhino
As the fraction pieces got smaller, I started having a problem with them all fitting into the base. I believe this may be due to the turns that the printer has to make in order to print the pieces. I had to use a smaller radius for some of the smaller pieces on both the prototype and the final.