Wednesday, December 1, 2010

Master Angle

Angles are very important in our house.  Angles pay our bills, provide us with health insurance and allow me to home school.  But people that do not rely on angles for their livelihood may wonder what the big deal is.  Sure, angles come up in geometry class, but otherwise, who cares?
Surveying isn't surveying without angles

Master Innovations is teaching kids grades 1-4 what the big deal is really about with their Master Angle curriculum, which includes a 76 page workbook and a cleverly made full-circle 360 degree protractor.

At first, I thought no matter how important angles are, how can you fill 76 pages of them for 1-4th graders?  But this book covers a lot of sophisticated geometry vocabulary.  It goes beyond anything my kids have encountered in their math studies, with my oldest half way through algebra, by starting with a point, progressing through nine types of angles, and ending up with chords of a circle.  A handful of vocabulary words are introduced and are followed by various activities to cement the vocabulary and apply the concepts.  The full circle protractor is used to measure and draw angles.   Throughout the book, angles are applied to everyday life in pool tables, clocks, houses, baseball diamonds, and maps.

For video on how to use full protractor, click here

Flower (10) enjoyed this book, but thought at times there were too many practice pages for a concept. It was easy to cut some pages out when she understood a topic, and the extra practice was there when she needed it.  But her favorite part was the protractor. With numbers in blue and red, holes for easily drawing angles and a pivoting arm to measure angles, she was fascinated by the number patterns on the protractor. I often caught her playing with those number patterns instead of working in the book.  That alone made the protractor valuable as she was thinking in new directions.

While the book ($15.95) and the protractor ($5.95) can be bought and used alone, I don't think you would get anywhere near the value you get with them used together. 

This is by no means a complete curriculum of any kind, but is a great diversion; something fun and different while still learning math.  Master Innovations also makes curriculum for rulers, clocks, and fractions, and a measurement poster.


  1. Nice review! We really liked this in our house too!

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