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Soroban or 9 bead abacus
Forfatter
James Monaghan
Emne:
Addition
,
Aritmetik
,
Aritmetiske operationer
Soroban or 9 bead abacus.
GeoGebra
Modified copy of Jerzy Mil's soroban.
Nye Materialer
Fourier Lissajous (Mechanical)
Pathway to Proof: Triangle Angles
z`]]
רישום חופשי
Conway Circle Theorem
Opdag Ressourcer
Graphs of Exponential Function y = k a^x
Transforming Graphs
Limit as n-> infinity of (1+1/n)^n
Untitled
Sine and Cosine Functions
Arithmetic Calculation Game (working backwards)
Udforsk emner
Pythagoras or Pythagoræiske sætning
Ligninger
Subtraktion
Rektangel
Kegle