The weight fraction and its methods of calculation were discussed. They recalled two already known procedures. One using a triplet and the other using a formula. However, all students used a triple element for the calculation. When counting three examples, the teacher pointed out the common mistakes and then the students counted independently. When the teacher argued, she acknowledged the mistake and corrected herself. I liked that. None of the students had stupid remarks. Everyone respected each other and no one interrupted.
When counting three examples, the teacher pointed out the common mistakes and then the students counted independently.