Basic problems

Initiation to the bar diagram

Initiation to "Plus-Minus" machine

States composition with bar diagrams

... with marbles

... with liquids

... with decimal numbering dominoes

...with balances

...with bar diagrams

... with marbles

... with liquids

... with decimal numbering dominoes

...with balances

...with bar diagrams

... with marbles

... with liquids

... with decimal numbering dominoes

...with Roberval balance

...with bar diagrams

... with marbles

... with liquids

... with decimal numbering dominoes

Training, evaluation with bar diagrams

Initiation to the multiplicative bar diagram

Introduction to the Cartesian diagram

Multiplication, division with diagrams