其他書名	Teacher's guide
出版	Pearson, 2017
ISBN	01345901559780134590158
URL	http://books.google.com.hk/books?id=jtZIswEACAAJ&hl=&source=gbs_api

註釋"Mom takes her kids to a lacrosse game. They are proud that this popular game was first played by First nations people. Strand: number. Big idea: quantities and numbers can be added and subtracted to determine how many or how much. Math focus: add and subtract to 20; compare and order sets to 20." --