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12 Days of Curtsmas Chapter 1: Addition and subtraction.
This is a Curta Type I, built in 1952. Stay tuned for episodes every other day, December 3 - 25. Thanks as always to the person who gave me the Curta.
Chapter 11 (December 23) will be a mailbag episode! So please ask questions, etc.
End song inspired by "Hotter than a Molotov" by The Coup. • The Coup: Hotter Than ...
Jingle bells sound from www.freesoundsl..., CC-BY-4.0