Mots Croisés MAGNETISMVersion en ligne ACTIVITY TO EVALUATE THE INITIAL KNOWLEDGE ON MAGNETISM par Paco REYERO FLORES 1 FIRST PHILOSOPHER WHO STUDIED THE PHENOMENON OF MAGNETISM 2 3 ACTION THAT OCCURS BY PLACING TWO EQUAL POLES IN FRONT 4 5 6 7 EACH OF THE SIDES OF A MAGNET 4 6 7 2 5 3