Interactive
Curated OER

All About Circles

For Students 6th - 8th
For this all about circles worksheet, students interactively answer 10 multiple choice questions about circles, then click to check their answers.
Interactive
Curated OER

Using Proper Tools to Solve Problems-Pre Test

For Students 4th - 6th
In 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.
Interactive
Curated OER

Using Proper Tools to Solve Problems I

For Students 5th - 7th
In this tools for problem solving worksheet, students complete a set of 10 multiple choice questions. Worksheet is labeled as a "post test." Answer link provided.
Interactive
Curated OER

Math on the Ragbrai-Using the Proper Tools to Solve Problems

For Students 4th - 6th
In this problem solving tools worksheet, students complete a set of 10 multiple choice questions. Worksheet is labeled as a "pre test." 
Interactive
Government of Alberta

Learn Alberta: Exploring the Diameter and Circumference

For Students 9th - 10th
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.