This activity comes from the NYSED/CUNY CareerKits. It can be found in the Construction CareerKit, Unit 6 House and Home, Section 5.

For this activity, students build a conceptual understanding of fractions, focusing on the benchmark fractions of halves, quarters, eighths, and sixteenths. Students then consider that understanding in the context of measurement, working with rulers to find the center of a circle.