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Isto é Matemática
Author:
Diego Lieban
Reinventar a Roda - Isto é Matemática
A Catenária
Cicloide
O Espirógrafo
New Resources
Intersections of y=a^x and y=log(a, x)
Interactive Unit Circle
Difference engine Babbage vb 2
Special Solid Trace
Colouring of Venn Diagram
Discover Resources
String Art : 2 Circles 12 Points
Jajargenjang
Number of Stories (Direct Proportion)
ortocentar
感度と特異度（と有病率）
Discover Topics
Ellipse
Means
Fractions
Quadratic Functions
Upper and Lower Sum or Riemann Sum