Very Satisfying Shackman Fraction Learner Set, Complete with Spinner, 1960s screen shot and with some dust caught

and with some dust caught behind the glass

some smudges

" executed at 1/4 life-size scale

And earned a Ph

This one--labeled "G" in what surely was a whole series--makes me think he had tired of the textile designing exercise by this point

Very Satisfying Shackman Fraction Learner Set, Complete with Spinner, 1960s screen shot and with some dust caughtI've had just a couple of these Shackman "Fraction Learner" sets over the years and will always scoop them up when I come across them. Definitely an excellent tool for teaching fractions as portions of a whole, with six circles divided up into differently sized slices, and a corresponding spinner to direct activity but also just excellent aesthetically and design wise, and there is great pleasure in mixing and matching the segments comprising each