TOS Crew Review - Master Ruler

Master Ruler is a unique ruler that combines several rulers into one, making measuring and learning fractions easier! Created by Master Innovations, the Master Ruler is made up of several see-through layers of rulers, including an inch, half-inch, quarter-inch, eighth-inch and even one that shows sixteenth-inch segments. Students can easily see how measurements can be broken down into specific, tiny parts, and also visualize the concept of fractions and how fractions can be reduced, added, subtracted and used together.

For our review, I received not only the Standard Ruler, but also the Metric Ruler, the Master Ruler Workbook, (which can all be purchased together in the Master Ruler Starter Set), as well as a Marvels of Measurement Poster.

The ruler is fun - even my "littles" (ages 5.5 and 3.5) enjoyed playing with it and measuring the pictures in the workbook. It was a great introduction to measurement for them! My olders enjoyed it as well, and I felt that it challenged them in several ways - for one, they learned that when trying to make accurate and precise measurements down to the tiniest fraction, lining things up and counting correctly is very important! They were also challenged by the pages in the workbook that deal directly with converting and reducing fractions, as well as visualizing equalities. We haven't formally covered fractions yet in our normal math program, and I feel that having the Master Ruler around not only offered a good introduction, but also will be helpful when the time comes and something both visual and hands-on is needed. It also proves that, yes! You will need to use these things "in real life"! ;-)

While the ruler by itself is an excellent tool, I feel to really get a good idea of how useful it is, the workbook is also necessary. Thankfully, while the workbook is consumable, there is permission to photocopy pages for your own family's use, which makes it more economical for families with several children, especially if they are at different levels of learning.


The Marvels of Measurement Poster that we received is not essential to using the Ruler, but I love it anyway! Both myself and one of my children often have trouble remembering conversions, especially cooking ones, and this poster makes it easy to see and understand how various measurements can be broken down (ie. gallons into pints, pounds to ounces, etc). This will be hanging on our wall where we can all see it!


Priced at only $9.95 for the Standard Ruler, and $15.95 for the Workbook, I find the Master Ruler to be a great value monetarily as well as educationally!

Also be sure to check out other creative products by Master Innovations (inlcuding Master Clock, Master Fractions, and Master Angles), and see what other Crew Members thought of these various products by checking out the TOS Homeschool Crew Blog!

Disclaimer: I was given this product specifically for the purpose of reviewing here on my blog as a member of TOS Homeschool Crew. I received no other compensation in regards to this review.