Measurement is a necessary skill that we use in our daily lives. Many children struggle to learn the concepts length, weight, distance, etc. The ruler is one of the first tools we teach when beginning to develop measurement skills. A student might grasp the idea of a foot and 12 inches as the same because it is something they can see and touch with our standard ruler. Try to break that down to smaller increments, and you quickly lose many of the students. Master Innovations has designed a system of rulers to help better teach that task with their Master Ruler.
The Master Ruler is designed as one rule with several parts that lay over each other, but transparent to see the addition of smaller increments within the large increment at the base. The ruler comes in Standard English and Metric increments available separately. The idea is to show that the smaller increments are still measuring the exact same amount of space, but breaking the space up into different size parts or increments. We have all seen similar techniques used with fractions and fraction pies. The white base ruler simply has 12 red lines dividing the space into 12 equal parts each 1 inch. A second, but transparent ruler is laid over the base ruler that has 24 blue lines dividing it into ½ inch increments. Each line that matches an inch marker below is a little heavier. The red line of the base ruler marking each inch is a little longer than the blue lines to help reinforce the concept that the space is equal regardless of the number of increments. There are three additional transparent rulers that can be place on top of the rulers below to correspond with ¼ inch, 1/8 inch, and 1/16 inch increments each with a different color-coding. The lines of each of the rulers are sized so that all of the increments can be seen clearly even through the last layer of 1/16 inch increments. The white base ruler also has a conversion chart on the back for many of the mostly commonly used facts that every student needs to know as second nature. Having them handy will help them to memorize these facts easily. The metrics ruler is essentially the same, but uses metric increments. With practice using The Master Ruler, the student can begin to visualize the concepts of basic measurements and use them successfully.
Many special needs students will find the system great for helping them understand the concepts. The color-coding is great for may learning disabled and ADD/ADHD students as well as the overlay system to emphasize the fact that the unit space or distance is the same, but the number of sections it is broken down into is what changes. Of course, it fits very well for students are more kinesthetic or hands-on learners. The system of color-coding and overlay also works with low vision students, too, without too much difficulty. There are some tactile paint and bumps that can help some, too, but as is, the totally blind might have too much difficulty. A workbook available separately has activities that will help you introduce the use of the rulers, too. However, though many of the pictures used for measuring are fine, there are some that are blurry and would definitely be difficult for a low vision student to use. The company will probably address this issue in future versions. Overall, though, the system is very beneficial for most special needs issues.
The products are also very durable as well as affordable at $9.95 each. The workbook, full of activities, is $15.95, and a teacher’s ruler that is suitable for demonstrations and overhead use, too. You can also purchase a Starter Set for $41.25 for a $4.55 savings. Master Innovations also has other affordable systems available great for learning other math concepts with their Master Clocks, Master, Angles, and Master Fractions. Go to http://www.themasterruler.com for more information.

Though I received a free product to write this review, I was not compensated in any other way. The opinion expressed is entirely my own.

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