EMPower Math, Using Benchmarks: Fractions, Decimals, and Percents, Teacher Edition Teacher's ed.(EMPOWER MATH) P 160 p. 11
内容
Students use the fractions 1/10, 1/2, 1/4, and 3/4; the decimals 0.1, 0.5, 0.25, and 0.75; and the percents 50%, 25%, 75%, 100%, and the multiples of 10% as benchmarks with which to describe and compare all part-whole relationships.
