Aha! Several years ago a friend gave me a copy of a Circle of 5ths worksheet that she found somewhere on the Internet. I searched for it several times and never found it. Until today! Hot off the web from pedalplus.com.
This is one of the best Circle of 5ths worksheets I’ve seen and I’ve used it numerous times with my students. There are two separate worksheets – one for treble clef and one for bass clef. Check them out here: