Exigencia cognitiva de las tareas sobre probabilidad en el currículo de Educación Primaria
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This work analyses the level of cognitive challenge on probability tasks proposed by Chilean Primary Education programs. Such programs establish a reference to follow when deciding how to organize, sequence and develop the teaching and learning process, especially about contents which have been recently incorporated into the school curriculum. Results show a low level of cognitive challenge tasks predominance; which lessen the study of probability to the use algorithms and formulas