Circumference and Area of Circles

UPDATED

Resize a circle and compare its radius, circumference, and area.

Screenshot of Circumference and Area of Circles Gizmo

LESSON MATERIALS:

User Lesson Materials (1):

User Recommendations (1):

User Testimonials

Critical Acclaim

  • Winner: Best Science Instruction Solution

    2013, 2010, 2007, 2006 SIIA CODiE Awards

  • Winner: Readers' Choice Award

    2013 eSchool News

  • BESSIE Award Winner: Multi-level

    2013 ComputEd Gazette

  • Cool Tool Award: STEM Solution

    2013 Ed Tech Digest

  • Winner: Distinguished Achievement Award

    2012, 2011, 2008, 2007, 2005 AEP

  • EDDIE Award Winner: Multi-level

    2012 ComputEd Gazette

  • Winner: Golden Lamp Award

    2010 AEP

  • Winner: Best K-12 Instructional Solution

    2009 SIIA CODiE Awards

  • Winner: Award of Excellence

    2009, 2008 Tech and Learning Magazine

  • Finalist: Best Math Instructional Solution

    2013, 2012, 2009, 2008, 2006 SIIA CODiE Awards

  • Finalist: Distinguished Achievement Award

    2013, 2012, 2011, 2010, 2009, 2006 AEP

  • Finalist: Best K-12 Instructional Solution

    2010 SIIA CODiE Awards

  • Finalist: Golden Lamp Award

    2009, 2008, 2006 AEP

  • Diamond Award in Mathematics

    District Administration Magazine

  • E-Learning Innovation Award

    Macromedia Corp.

  • Best Education Website

    Webby Awards

  • Three time Digital Dozen Honoree

    Eisenhower National Clearinghouse

Gizmos » User Lesson Materials

Subscribing teachers can download lesson materials contributed by other teachers, as well as contribute their own lesson materials for Gizmos. For information on how to subscribe, please contact us.

If you are a current subscriber, please login.

Gizmos » Add Lesson Materials

FOR GIZMO: Circumference and Area of Circles

Subscribing teachers can contribute lesson materials. For information on how to subscribe, please contact us.

If you are a current subscriber, please login.

Gizmos » Add User Recommendation

FOR GIZMO: Circumference and Area of Circles

Subscribing teachers can recommend Gizmos. For information on how to subscribe, please contact us.

If you are a current subscriber, please login.