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Effectiveness of Using Kosurasi Media to Improve Basic Math Skills in Children Aged 5-6 Years

BELIA Early Childhood Education Papers · Vol. 14 No. 1 (2025) · pp. 75–87

DOI
10.15294/belia.v14i1.20094
ISSN
2686-3375, 2252-6382
Published
2025-05-28
Publisher
Universitas Negeri Semarang
Language
eng

Abstract

One aspect of development that must be well-stimulated in early childhood is cognitive development. Cognitive development can be stimulated through children’s basic mathematical skills. These skills can be enhanced through the application of Kosurasi media. This study aims to determine the effect of applying Kosurasi media in improving basic mathematical skills in children aged 5-6 years at TK Dharma Wanita Bandung Wonosegoro. This study used a quantitative method with a one-group pretest-posttest research design. The population and sample consisted of 30 children aged 5-6 years at TK Dharma Wanita Bandung. Data collection was conducted through observation, interviews, and documentation. The collected data were analyzed using normality tests, homogeneity tests, paired sample t-test hypothesis testing, and finally, N-gain score tests with the help of the SPSS V.26 data processing application. The average pretest score was 76.10, while the average posttest score was 115.33. A paired sample t-test hypothesis test yielded a significance result of 0.000 lt; 0.05, indicating that H0 was rejected and Ha was accepted. This means there was a significant difference in the children’s basic mathematical skills before and after the intervention. Furthermore, the N-gain test produced a score of 57.76%, suggesting that the application of Kosurasi media has a moderately effective impact on improving the basic mathematical skills of children aged 5-6 years.

Keywords

Collaboration network of the authors

29 authors · 32 co-authorship links · 1 across different organisations

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  • Universitas Jambi
  • State University of Semarang
  • Affiliation unknown
  • Different organisations
  • Same organisation
  • Affiliation unknown
  • Thicker line = more joint articles · bigger circle = more articles
Show as table
Co-authorOrganisationJoint articles
Diana DianaState University of Semarang2
PutrianaAffiliation unknown1
Jayanti MughiyatiAffiliation unknown1
Laila MalikaAffiliation unknown1
Dama UlfaAffiliation unknown1
Bella Herkiana RiskyAffiliation unknown1
Zaenurokhman Pipit WicaksonoAffiliation unknown1
Sinthia Nurul FitriAffiliation unknown1
Masfiyyatuz ZahroAffiliation unknown1
Nurul HidayahAffiliation unknown1
Ade KumalasariUniversitas Jambi1
Eloh IstikomahAffiliation unknown1
Desty Citra SariAffiliation unknown1
Anasta Dian IsmiAffiliation unknown1
Annisa Isni OktafianiAffiliation unknown1
Alvi Dwi RahmawatiAffiliation unknown1
Salamah SalamahAffiliation unknown1
Efdina FinantiAffiliation unknown1
Sri Setiyo RahayuAffiliation unknown1
Lita LatianaAffiliation unknown1
Naili RohmahAffiliation unknown1
Sri Sularti Dewanti HandayaniAffiliation unknown1
Amirul MukmininUniversitas Jambi1
Eko HandoyoAffiliation unknown1
Luqman AzharyAffiliation unknown1
Haryono HaryonoAffiliation unknown1
Hairunisa HairunisaAffiliation unknown1

Affiliations come from OpenAlex; journal OAI-PMH metadata carries none. Authors without an OpenAlex ID are matched by name, which can merge or split people.

Metadata source: OAI-PMH (metadata jurnal) https://journal.unnes.ac.id/journals/belia/oai, first harvested 5 Nov 2026, last seen 5 Nov 2026.
Original metadata (oai_dc) 
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	<dc:title xml:lang="en">Effectiveness of Using Kosurasi Media to Improve Basic Math Skills in Children Aged 5-6 Years</dc:title>
	<dc:creator xml:lang="en">Riezky Ayu Saputri</dc:creator>
	<dc:creator xml:lang="en">Edi Waluyo </dc:creator>
	<dc:subject xml:lang="en">learning media, Kosurasi media, basic math, children aged 5-6 years</dc:subject>
	<dc:description xml:lang="en">One aspect of development that must be well-stimulated in early childhood is cognitive development. Cognitive development can be stimulated through children’s basic mathematical skills. These skills can be enhanced through the application of Kosurasi media. This study aims to determine the effect of applying Kosurasi media in improving basic mathematical skills in children aged 5-6 years at TK Dharma Wanita Bandung Wonosegoro. This study used a quantitative method with a one-group pretest-posttest research design. The population and sample consisted of 30 children aged 5-6 years at TK Dharma Wanita Bandung. Data collection was conducted through observation, interviews, and documentation. The collected data were analyzed using normality tests, homogeneity tests, paired sample t-test hypothesis testing, and finally, N-gain score tests with the help of the SPSS V.26 data processing application. The average pretest score was 76.10, while the average posttest score was 115.33. A paired sample t-test hypothesis test yielded a significance result of 0.000 lt; 0.05, indicating that H0 was rejected and Ha was accepted. This means there was a significant difference in the children’s basic mathematical skills before and after the intervention. Furthermore, the N-gain test produced a score of 57.76%, suggesting that the application of Kosurasi media has a moderately effective impact on improving the basic mathematical skills of children aged 5-6 years.
 </dc:description>
	<dc:publisher xml:lang="en">Universitas Negeri Semarang</dc:publisher>
	<dc:date>2025-05-28</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en">Peer-reviewed Article</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journal.unnes.ac.id/journals/belia/article/view/20094</dc:identifier>
	<dc:identifier>10.15294/belia.v14i1.20094</dc:identifier>
	<dc:source xml:lang="en">BELIA Early Childhood Education Papers; Vol. 14 No. 1 (2025); 75-87</dc:source>
	<dc:source>2686-3375</dc:source>
	<dc:source>2252-6382</dc:source>
	<dc:source>10.15294/belia.v14i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journal.unnes.ac.id/journals/belia/article/view/20094/4169</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2025 Early Childhood Education Papers</dc:rights>
</oai_dc:dc>