【已失效】 Math Expressions: Homework & Remembering G2 - G5

Math Expressions: Homework & Remembering G2 - G5.
Publisher: HOUGHTON MIFFLIN HARCOURT
Based on research funded by the National Science Foundation (NSF),
Math Expressions is a proven Pre-K–6 curriculum that helps children
make sense of math by exploring, discussing, and demonstrating their understanding of key concepts.
挺不错的一套课后练习题, 难度适中，
可以给孩子作为平时复习巩固的练习题。资料里不包括教材。