Circle Area Formula (TPU Flexible Filament), PI

cults3d

Making Sense of the Circle Area Formula (TPU Flexible Filament) Circles are the ultimate universal shapes found in nature, design, and math across P-12 and beyond! Students often say π (PI) is 3.14 and the area of a circle is πR^2, struggling to understand why? In this unit, we will explore the true meaning of π (PI) and make sense of the circle area formula in a fun and creative way. The circle included has a diameter of 100 mm and is 4mm thick. Flexible filament is preferred for classroom use because it's more durable. A small cut allows the circle to unfold smoothly, but PLA filament might cause the wedges to break apart when used. Although they can still be used, they won't look as neat. How to Use If you print two copies, you can create a long parallelogram by using both pieces together. If you only print one copy, cut it into two semicircles and then assemble them into a shorter parallelogram. The reasoning remains the same; just adjust the base part accordingly. Read on for possible activities and questions to further explore this concept. Of course, a little "thought experiment" is necessary to flatten the base of the parallelogram ^_^