--- Introduction ---

- to type an expression on the keyboard given a precise syntax ;
- to compose / decompose a function with respect to usual reference functions ;
- to understand the syntax of an expression and to represent it with a tree ;
- to handle different representations (formula, tree or sentence) of a same expression.

The most recent version

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Please take note that WIMS pages are interactively generated; they are not ordinary HTML files. They must be used interactively ONLINE. It is useless for you to gather them through a robot program.

Description: how to read, to write or to draw an expression. interactive exercises, online calculators and plotters, mathematical recreation and games

Keywords: interactive mathematics, interactive math, server side interactivity, , algebraic expression, representation, syntax, syntactic tree, keybord writing, inline formula