The invention relates to a writing board (1) comprising at least one first panel (2; 2 ') having at least one erasable writing surface (5), characterized in that it comprises: - two uprights (3 ) planes having a respective first support edge (6; 6 ') for supporting the first panel (2; 2'), and - a cross beam (4) planar, the ends of which are configured to fit into two slots complementary (7a, 7b) arranged one above the other in one face of each upright (3), the insertion of the ends of the cross cross (4) in the complementary slots (7a, 7b) allowing the removable assembly and the keeping upright of the uprights (3).
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