Question

Mr. Lehman wants his students to understand percentages and the conversion of decimals to percentages. According to the model of human cognition, the first thing he needs to do in his lesson is be certain that:_________

Answer 1

To ensure students understand percentages and conversion of decimals to percentages, Mr. Lehman should establish a clear understanding of percentages, mental models, and basic ratios. He should then teach students how to calculate percentages using equivalent fractions and how to convert decimals to percentages using fractions with a denominator of 100.

Step-by-step explanation:

To ensure that his students understand percentages and the conversion of decimals to percentages, Mr. Lehman should first make sure that they have a clear understanding of the concept of percentages. He can do this by using mental models and basic ratios to help build suitable mental models for his students. He can also show them how to calculate percentages using equivalent fractions, where one of the fractions has 100 as the denominator. Additionally, Mr. Lehman should teach his students how to convert decimals to percentages by writing the decimal as a fraction with a denominator of 100 and then writing the fraction as a percent.