• Effectiveness of Lesson Plan for Enhancing Mathematical Vocabulary and Conceptual Understanding in Secondary Education

    Author and Affiliation

    Yang Ying 
    Professor, Doctor
    Beijing University of Technology
    Beijing, China
    E-mail: ying090986_98@gmail.com
    ORCID: 0009-0004-2874-4076

    Naduri Mutungi
    PhD Student
    University of Embu
    Kenya
    ORCID: 0009-0002-9015-8575

    Keywords

    Mathematical Vocabulary Conceptual Understanding Mathematics Education Disciplinary Literacy Frayer Model ICT Integration Secondary Education Mathematical Achievement

    Abstract

    Mathematical achievement is influenced not only by procedural competence but also by learners’ ability to understand and use the specialized language of mathematics. In many secondary school contexts, difficulties in comprehending mathematical vocabulary constitute a significant barrier to conceptual understanding, particularly in solving word problems and interpreting abstract concepts. This study examined the effectiveness of a prototype lesson plan designed to enhance students’ mathematical vocabulary through the integration of the Frayer Model and information and communication technology (ICT) resources. Using a quasi-experimental design, 216 Form Two students from secondary schools in Murang’a County, Kenya, participated in a ten-week instructional intervention. Learners in the experimental group engaged in structured vocabulary instruction that emphasized definitions, conceptual attributes, examples, non-examples, visual representations, and collaborative learning activities, while the control group received conventional definition-based instruction. Analysis of pre-test and post-test achievement data revealed that students exposed to the vocabulary-focused intervention achieved substantially higher levels of mathematical understanding and performance than their peers in the control group. The experimental group recorded significantly higher post-test scores (M = 9.13, SD = 4.73) than the control group (M = 5.90, SD = 2.61), with the difference reaching statistical significance, t(214) = 6.21, p < .001, and demonstrating a large practical effect (Cohen’s d = 0.85). These findings suggest that mathematical vocabulary functions as a critical mediating factor in students’ conceptual development and problem-solving capacity. The study argues that language-sensitive instructional approaches should occupy a more central position in mathematics education and that structured vocabulary instruction can provide an effective pathway for improving learning outcomes, particularly within competency-based educational frameworks. The proposed lesson model offers a promising pedagogical framework for supporting conceptual engagement, mathematical literacy, and meaningful participation in mathematics learning.

    How to Cite

    Ying, Y., & Mutungi, N. (2026). Effectiveness of Lesson Plan for Enhancing Mathematical Vocabulary and Conceptual Understanding in Secondary Education. Science, Education and Innovations in the Context of Modern Problems, 9(8), 1–11.

    Publication History

    Received January 02, 2025
    Accepted May 11, 2026
    Published Online June 05, 2026

    Open Access and Licensing

    © 2026 The Author(s).

    Published by Science, Education and Innovations in the Context of Modern Problems (SEI) under the auspices of IMCRA – International Meetings and Conferences Research Association (Azerbaijan).

    This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits unrestricted use, distribution, adaptation, and reproduction in any medium, provided the original work is properly cited.

    CC BY 4.0 License

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