I had the privilege of working with five motivated and thoughtful teachers this week who will be teaching our Geometry21 course this year. I had about six hours to show them what this course is all about and make them understand what blended learning looks and feels like. I think it will be a...
Read more →This is a quick preview, I will expand upon it when I can. Here is the outline of another approach to the beginning of Geometry, where each major step can be observed through software or manipulatives, since they are visually obvious, or demonstrated through coordinate geometry. Some must be postulates, others can then be...
Read more →A week or so ago, the folks at MathMunch posted a piece about rhombic dodecs. Well, I love solid geometry, and it tied into my earlier study of honeycombs, so I was quickly hooked! I revised the nets they provided using GeoGebra, so I could locate the center of each rhombus to attach a magnet. I printed them...
Read more →I haven’t written anything yet about the fantastic group with whom I work, so I wanted to share a few things now. I am the Math Education Specialist for the Academy of Digital Arts and Sciences, one of the programs created and implemented by the Center for 21st Century Skills at EDUCATION CONNECTION, a...
Read more →One of the math teachers I follow on Twitter, Michael, made this great program to illustrate that inscribed polygons formed by connecting the midpoints of the prior polygon (concave or convex) will converge to a convex polygon. Try it: Not only is it super-cool mathematically, but it’s gorgeous! I couldn’t resist, I used some...
Read more →In the spirit of fun and collaboration, I set out to create graphs that brought together my favorite online math tools. G(x) is GeoGebra and D(x) is Desmos (thanks to the folks at Desmos for the title concept). With encouragement from my GeoGebra tweep, John, and shading help from my Desmos tweeps, Mary , Bob,...
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