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MS & HS math teacher at @esumstweet, independent #MathEd consultant, dad of 4 awesome boys; Views are my own. Isaiah 40:31
geogebra.org/m/xw3q4umc

フォロー数：1755 フォロワー数：21621
# 3d mtbos iteachmath geometry proof math maths mathed edtech hsmath collegemath circle figurethat mathedtech desmos funwithdesmos augmentedreality ipad arkit 3dmodel desmosart calculus apcalc calculator lifeis3d whymodelonlyin2d 3dmodeling msmath

What causes a conic section to be a parabola? 🤔 Quick cause & effect demo in Why not give Ss opportunities to tell us what they see vs. us immediately telling them what to see? https://t.co/00lmQ6Y8Xc. For all conics: https://t.co/y0lB6Vf0FS.

23 56
2020-02-27

Hey Steve, Carl — all good points. My original wording definitely needs improvement, and animation, perhaps doesn’t get the idea across: ‘s original problem is here.

1 1
2020-02-15

An unusual (not often seen) sufficient condition that guarantees a quadrilateral to be a parallelogram. How to prove? 🤔 Source: . https://t.co/WG1ElKNV2v

8 25
2020-02-15

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

7 27
2019-12-26

cosine waves with square cross sections transformed into cosine waves with rhombus cross sections having interior angles measuring 60 deg & 120 deg. Created in on

16 44
2019-11-29

Here, the scene we New Englanders desperately miss this time of year. Now to go back and actually rock the boat... 🤔https://t.co/9j9N4LyDTw

7 15
2019-11-26

Custom Solid: Each cross section || yAxis = a parabola with latus rectum = upper(x) - lower(x). Upper & lower FNS, limits of integration all modifiable: https://t.co/RzVZjq4RWa. Shown here in w/#AugmentedReality.

6 10
2019-11-15

2 Cylinders + Hemisphere + Torus = Lamp ? More composite solid modeling in with More info re: getting started: https://t.co/tVhsrQbb4t

13 26
2019-11-12

What does it mean for a polygon to be CONVEX? CONCAVE? Here, a quick class opener using 2 different approaches: https://t.co/3M17XDndq2 Why tell Ss when they can explore themselves and tell us?

18 36
2019-10-31