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1 triangle + 1 cevian + 3 circumcenters = 4 concyclic points! How to prove? 🤔 Source: . https://t.co/rRs3VoE0Y1

4 15
2020-07-09

Stereographic projection of circles by .

Consider the 8 vertices of the as points on the unit then make (spherical) centered on those points with radii chosen so that the circles are just tangent.

More➡️https://t.co/NjifiSyj0Y


16 36
2020-06-16

This was so fun last year, we used 's idea for his skee ball problem that I got from his session. Thanks Zak. It was such a fun task- I it. I love how their solutions looked so different ⚾️🥎🏀⚽️#secondgrade

1 2
2020-05-02

Added a few more characters (PigPen, Woodstock, & Sally) to this year's holiday Peanuts dance. 🙂 https://t.co/bf8fDV4TV7

7 27
2019-12-26

Playing around with pattern tiles again this morning and found something *super* cool!

I started by making this from ... (1/many)

6 11
2019-09-02

Testing, testing! Round and around. Just a test!

1 21
2019-06-21

Today we tried & ’s skeeball problem. They ❤️‘d it. I ❤️’d the variety of ways they organized their thinking 🤔 They know they can find more ways & R going 2 work on it at home 💕🌟

4 18
2019-04-11

How will you approach your mathematicians Monday? Thank you & ❤️💡🎾 I loved the story, Infinity & Me. I’m going to try this in 2nd. I changed the numbers, and I’m going to ask them to reflect too.

1 4
2019-04-05

Circles shown are internally tangent. How can we prove the 2 blue angles are always congruent? 🤔(Source: ). Explore here: https://t.co/u2Ifu0Hrt2.

3 12
2019-01-16