Four carefully thought-out worksheets, which have helped many classes focus on working
out the circumference of a circle or perimeter of a part-circular shape. There are also
questions that require students to work backwards to find the diameter (or radius) when the
circumference (or perimeter) is given. There are plenty of worded problems and an excellent
sheet on finding perimeters of more complex shapes with curves. My students always really
enjoy working through these sheets.
The sheet