Info: problem solving
Video: basic additive problems (in French)
Video: basic multiplicative problems (in French)
Tens and units with marbles
Cuisenaire rulers - free use
Cuisenaire rulers - free calculations
Cuisenaire rulers - 2-term additions
Decimal numbering Dominoes
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 Roberval balance
Training, evaluation with bar diagrams
Initiation to the multiplicative bar diagram
Multiplication, division with bar diagram