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All Journal Pendas : Jurnah Ilmiah Pendidikan Dasar
Marcelly Claudia Sagala
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Analisis Miskonsepsi Nilai π pada Materi Lingkaran dalam Buku Senang Belajar Matematika: Antara Nilai Sebenarnya dan Realitas Irasional Syifa Eriza Nasution; Joyce Lidya Patricia Daeli; Pujiono Sihite; Marcelly Claudia Sagala; Immanuel Simbolon; Wingston Leonard Sihombing
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 10 No. 03 (2025): Volume 10 No. 03 September 2025 Terbit
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v10i03.33148

Abstract

Understanding mathematical concepts is inseparable from the clarity of their definitions and presentation in textbooks. One fundamental concept that frequently appears in school curricula, from elementary, middle, and high school levels, is the constant π (phi) in the topic of circles. Mathematically, π is an irrational number obtained from the ratio of a circle's circumference to its diameter. However, in practical learning, the value of π is often simplified to or 3.14. This practical presentation has the potential to lead to misconceptions in students, namely, that they assume π is a rational number. This study used qualitative methods with document analysis techniques in the "Happy Learning Mathematics" book. The results of the analysis indicate an emphasis on the use of the value π = or 3.14 without explaining its irrational nature. As a result, students tend to memorize practical formulas and numbers without understanding that these two values are only approximations and that π is an irrational number with infinite decimal places.
Co-Authors Immanuel Simbolon Joyce Lidya Patricia Daeli Pujiono Sihite Syifa Eriza Nasution Wingston Leonard Sihombing