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  <div class="csl-entry">Maharani, Z., Sakur and Armis (2024) “Improving mathematical problem-solving skills in ratio through the application of problem-based learning”, <i>Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika</i>, 7(2), pp. 234–244. doi: 10.30606/absis.v7i2.2602.</div>
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