Mathlets

Order of Precedence (BIDMAS)
Circle Theorems
Completing the Square Level 1
Completing the Square Level 2
Decimals
Equations Level 1
Equations Level 2
Equations Level 3
Expanding Brackets Level 1
Expanding Brackets Level 2
Expanding Brackets Level 3
Expanding Brackets Level 4
Eyeballing Game
Formulas
Fractions
Algebraic Fractions
Gradient
Graph Transformations Level 1
Graph Transformations Level 2
Linear Graphs Level 1
Linear Graphs Level 2
Percentages Level 1
Percentages Level 2
Quadratic Graphs
SOHCAHTOA
Surds
Interactive Tablesquare
Mixed Transformations
Enlargement (Dilation)
Reflection
Rotation
Translation
Vectors
Differentiation Level 1
Differentiation Level 2
Dimensions of Formulas
Factoring Level 1
Factoring Level 2
Factoring Level 3
Factoring Level 4
Nth Term
Rounding
Rounding and Bounds
Simplifying Level 1
Simplifying Level 2
Simplifying Level 3
Midpoint Construction

Source : http://www.geogebra.org/en/wiki/index.php/Mathlets 

Rapports trigonométriques

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Triangle de Pascal

Des fichiers dynamiques sur les propriétés du triangle avec diverses notations:
http://www.geogebra.org/forum/viewtopic.php?f=2&t=10170&p=76783#p76783