PEMBINAAN UJIAN DIAGNOSTIK KOGNITIF BERBENTUK DUA-PERINGKAT UNTUK MENGENAL PASTI MISKONSEPSI OPERASI MUDAH UNGKAPAN ALGEBRA (Development of a Two-Tier Cognitive Diagnostic Test to Identify Misconceptions of Basic Operations of Algebraic Expression). Malaysian Journal of Learning and Instruction, v. 23, n. 1, p. 181–204, 31 Jan.2026.