Validity of Junior High School Mathematics Teaching Materials Based on Case Method Integrated Local Culture Mandailing Tribe
1Prihatin Ningsih Sagala, 2Pristi Suhendro L, 3Eri Widyastuti

1Universitas Negeri Medan, Jln.Willem Iskandar Psr V Medan North Sumatera Indonesia 20221
2Universitas Negeri Medan, Jln.Willem Iskandar Psr V Medan North Sumatera Indonesia 20221
3Universitas Negeri Medan, Jln.Willem Iskandar Psr V Medan North Sumatera Indonesia 20221

Abstract

Abstract. Education is a conscious and planned effort to create a learning atmosphere and learning process so that students actively develop their potential to have religious spiritual strength, self-control, personality, intelligence, noble character, and skills needed by themselves, society, nation and state, and have global mindset. Junior high school students belonging to the Generation Z category have an attitude of openness, this generation accepts various views and mindsets, causing them to easily accept diversity and differences in views. As a result, Gen Z becomes difficult to define themselves, self-identity changes based on the factors that influence their thinking. Therefore, it is very important to restore national identity or introduce the cultural identity of the surrounding community so as not to be eroded by the development of the outside world which makes generation Z forget local culture, one of which is the Mandailing Tribe Culture in North Sumatra. Development research using the ADDIE Model by integrating the Local Culture of the Mandailing Tribe in North Sumatra in developing Mathematics Teaching Materials for Class VII Junior High Schools based on students^ initial perceptions of the current condition of Generation Z. The use of the Case Method approach aims to improve students^ critical thinking skills based on the cases presented in the teaching materials. The objectives of this study are (1) to find out how students perceive the Mandailing Tribe culture contained in the VII grade junior high school mathematics teaching materials, (2) to determine the validity and practicality of seventh grade junior high school mathematics teaching materials based on case method integrated local culture of the Mandailing tribe in North Sumatra.

Keywords: Validity, Teaching Materials, Case Method, Mandailing Tribe Culture

Topic: Mathematics and Science Education