Teaching Implementation Report: Mathematics Flash Card Media to Improve Understanding of Ordering Numbers in Second Grade Elementary School

Abstract

This teaching implementation report documents the use of mathematics flash card media to improve second-grade students' understanding of ordering numbers at SD Negeri Langlang. The initial problem was that students tended to learn ordering numbers abstractly through textbooks and board explanations, which made it difficult to visualize place value and compare numbers. The strategy used Classroom Action Research in two cycles through video stimulus, number detective games, group work, colored flash cards, LKPD, formative tests, observation, and reflection. Results showed that the class mean increased from 58.5 in the pre-cycle to 68.0 in Cycle I and 82.5 in Cycle II. Classical mastery increased from 33.30% to 58.30% and finally reached 91.70%. These findings indicate that concrete and color-coded flash cards help students understand place value and ordering numbers more accurately.