Inscribed Angles Manipulative - Geometry Manipulative

thingiverse

This is a 6 inch diameter Geometry manipulative that can be useful for teaching and learning about angles, inscribed angles, central angles, arc lengths and measures. Use with rubber bands to discover the relationship between inscribed and central angles. Holes around the circumference are spaced at 15 degree intervals, with a total of 24 lines equally radiating from the center. If planning on using this to complement lessons on the subject, print a classroom set so each student can explore, or at least print enough for each table group to share one. Additional materials needed: rubber bands 25 small nails (I used some 5/8" nails I had in my workshop - see photo) to tap into holes (24 around the edge and one in the center) hammer If you like this object, check out the customizable version I created at: http://www.thingiverse.com/thing:2185319 Print Settings: Printer Brand: MakerBot Printer: MakerBot Replicator (5th Generation) Rafts: Yes Supports: No Resolution: 0.1 Infill: 50 Notes: I printed this at 0.1 mm resolution because the nail hole diameter is so small. It resulted in a longer print time, but the result was a good print with holes that hold the nails perfectly.