Calcination is a thermal treatment process that typically involves heating materials like ores or powdered metals in the presence of air or oxygen, aiming to drive off volatile fractions such as water, carbon dioxide, or other gases. This process is often used to decompose carbonate ores and remo...
. It can be observed that spontaneously, a young child does not count even if she knows a sequence of number names. From this general situation, several steps can be conceived, taking into account didactical variables (Brousseau1997) – that is, conditions on the tasks to be achieved that ...