One of the mathematics material that elementary school teaches is multiplication. One of the problems in the Kunci village is that there are still many elementary school students who do not understand or can't memorize multiplication, while in school it is not possible to always multiply because of time and curriculum issues, so additional learning guidance using card game is needed. The result of community service activities is the ability of children in multiplication to increase. As many as 35 of the 40 children or 81,4% children get a score above the average in multiplication tests.

This study aims to investigate the understanding of mathematics department students in the subject of statistical method at moodle through scientific approach. The research design is qualitative research. The research subjects are fourth semester students of mathematics department at IKIP PGRI Bojonegoro who are chosen using purposive sampling. The data is analysed using data triangulation. The results of study reveal that from all five subjects; in the online learning using moodle; get so easy in understanding the learning materials. The learning becomes flexible; it can be carried out anywhere and anytime. Students are able to study by looking for learning references from other sources. Hovewer, there are several problems in the online learning such as lecturer’s explanation is not as clear as when learning in class, there are more assignments given, and several materials have not been mastered by students. In the online learning, students have to be more focus when it is directed from YouTube. When the students have not understood the learning material in online learning, they can ask it to the lecturer or their classmates. Therefore, five subjects can anwer the questions about homogeneity and balance tests. Their completion steps are precise and perfect.