Comments on: Geometry and Topology https://earlymathcounts.org/geometry-and-topology/ Laying the foundation for a lifetime of achievement Mon, 10 Jul 2017 21:57:13 +0000 hourly 1 By: Jen https://earlymathcounts.org/geometry-and-topology/#comment-438 Fri, 22 May 2015 22:07:49 +0000 http://www.mathathome.org/blog1/?p=3296#comment-438 In reply to Len.

Thanks Len, I never would have thought of this but it makes sense. I also appreciate the use of mathematic vocabulary to support the concept. Do you have a good idea for \”concavity\” as well?

]]> By: Len https://earlymathcounts.org/geometry-and-topology/#comment-437 Tue, 19 May 2015 12:28:35 +0000 http://www.mathathome.org/blog1/?p=3296#comment-437 A useful geometric/topological concept that is easy to explain to youngsters is convexity. If any two points in a set can \”see\” each other, in the sense that the straight line connecting them stays entirely in the set, then the set is convex. For example, a circle or an oval is convex. On the other hand, a block letter L is not convex since a point on the top cannot \”see\” the bottom branch of the L.

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