Iwan Andi Jonri Sianturi

An Analysis of Singaporean versus Indonesian Textbooks Based on Trigonometry Content

Iwan Andi Jonri Sianturi, Der‐Ching Yang · Eurasia Journal of Mathematics Science and Technology Education · 2017 · 40 citations · Full text

Education, Mathematics, Mathematics Education +14

Sixth Grade Students’ Performance, Misconception, and Confidence on a Three-Tier Number Sense Test

Der‐Ching Yang, Iwan Andi Jonri Sianturi · International Journal of Science and Mathematics Education · 2020 · 34 citations

Education, Educational Assessment, Educational Psychology +14

Analysis of algebraic problems intended for elementary graders in Finland, Indonesia, Malaysia, Singapore, and Taiwan

Der‐Ching Yang, Iwan Andi Jonri Sianturi · Educational Studies · 2020 · 21 citations

Education, Mathematics, Mathematics Education +8

Assessing students' conceptual understanding using an online three‐tier diagnostic test

Der‐Ching Yang, Iwan Andi Jonri Sianturi · Journal of Computer Assisted Learning · 2019 · 20 citations

Education, Mathematics, Mathematics Education +16

Taiwanese primary school teachers’ perceived enablers for and barriers to the integration of children’s literature in mathematics teaching and learning

Der‐Ching Yang, Iwan Andi Jonri Sianturi, Chia Huang Chen et al. · Educational Studies in Mathematics · 2021 · 14 citations · Full text

Education, Mathematics Education, Teaching +8