Three J's Learning

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• Three J's Learning: 2021

  slinky tangles (more seriously, links with secondary structure for alpha-helix protein folding)  caesar cipher rotations: inspired by this which was probably mentioned on ACX or DSL Chebyshev machines...

• Three J's Learning: Cryptarithmetic Puzzles for Grades 1 to 4

  Inspired by a series of puzzles from Manan Shah , I decided to have the kids play with cryptarithmetic puzzles today. In addition to borrowi...

• Three J's Learning: Math of Duolingo (100k Lingot Challenge)

  Well, at least about the lingots . . . During our recent long weekend, the two older J's and I were talking about lingot acquisition on Du...

• Three J's Learning: Fractions and Farey Addition

  Benjamin Leis (who posts at Running a Math Club ) flagged this video in response to our recent fractions work: Funny Fractions and Ford Circ...

• Three J's Learning: Cryptarithmetic puzzles follow-up

  I was asked to write a bit about strategies and answers for the puzzles we gave two weeks ago . BIG + PIG = YUM Because the digits in YUM...

• Three J's Learning: Teaching goals for English Language Arts

  These are our current objectives for English language study with our children. These are very high level goals, but we feel it is important ...