In this online math worksheet, students determine the volume of cylinders given their dimensions. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A terrific...

For this using proper tools worksheet, students answer a set of 10 multiple choice questions. Students may click on a link to see answers and may print worksheet out.

For this problem solving tools worksheet, students complete a set of 10 multiple choice questions. Worksheet is labeled as a "pre test." 

In this all about circles worksheet, learners interactively answer 10 multiple choice questions about circles, then click to check their answers.

This multimedia site offers a beginner's guide to understanding the relationship between the diameter and circumference of a circle. This Learn Alberta site offers a video [1:44], interactive exercises and printable extended exercises.