Fraction Circles and Clock

Here you can use a clock to measure fractions in a fraction circle.

When you press the "show me how" button, you can see how the clock can be compared to the angle. The part of the circle that matches the angle will be entered into the "hours" text box.

Click "my turn" if you want to try matching the same angle again. Click "next" to try a new angle.

Which fractions cannot be measured in hours?

Leone Learning Systems, Inc. (LLS) is a North Shore company that provides online courses for kids anywhere and local teaching and tutoring services for students in Chicago and the Northern Suburbs of Chicagoland. LLS also provides a free geometry software package for children age 6 and up, and free resources for teachers and parents. This site includes information about classes taught, availability for tutoring, learning activities for kids, lesson plans, and an ongoing software and curriculum research and development effort.