The purpose of this study is to assess the instructional use of mathematics picture books and teaching activities in the teaching of two second-grade mathematical units: ¡§Multiples¡¨ and ¡§Classification¡¨. In order to achieve this purpose, the researcher created four mathematics picture books. Furthermore, she explored the mathematical learning effects of second-grade elementary school students through mathematics picture book teaching. The stages of this study were three: creation of 4 picture books; implementation of using picture books in mathematics class; and, data analyzes on the collection of pre-test and post-test data; checklists of picture books follow-up activities; mathematics diaries; and, notes on students interview, classroom observations by teacher and investigator. The findings are three: 1) the creation of mathematics picture books; 2) the implementation of mathematics picture books in mathematics teaching; and, 3) the effects of using picture books in second-grade elementary school children's learning of mathematics. The creation of mathematics picture books. While ¡§Multi-colored Ice-cream¡¨ and ¡§Grandpa¡¦s Magic Forest¡¨ were designed in accordance to the unit of ¡§Multiples¡¨, two other books, named ¡§My Swimsuit is Lost¡¨ and ¡§Lala is Sick¡¨ were designed to integrate instruction in ¡§Classification¡¨. In these four stories, the plots were close to real life of students. These vivid presentations of illustrations and compositions not only drew students¡¦ interests and kept their high concentration, but also made them feel happy in exploring mathematical concepts implied in these books. The implementation of mathematics picture books. During the process of picture book teaching activities, students could keep high degrees of participation. Moreover, showing picture books through TV screen was applicable to whole class; using mathematics activities that were highly connected with contents of these picture books could motivate students¡¦ mathematics learning; applying these extensive activities flexibly could limit these activities which were infinite. The effects of using mathematics picture books. There was not only an advance in the cognition and understanding on ¡§Multiples¡¨ and ¡§Classification¡¨, but also positive attitude towards mathematics, mathematics class and mathematics learning. Besides, most students expressed their high expectations in mathematics picture book related teaching activities.