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All Journal Primary Education Journal (PRIMADONA)
Desti Rahayu
Universitas Pendididkan Muhammadiyah Sorong

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The Effect of Project-Based Learning (PjBL)-Based Student Worksheets (LKPD) on Plant Parts Topic of Grade IV Students' IPAS Learning Outcomes Cindy Claudya Salamor; Mustika Irianti; Desti Rahayu
Primary Education Journal (PRIMADONA) Vol. 1 No. 03 (2025): Primary Education Journal (PRIMADONA)
Publisher : Universitas Pendidikan Muhammadiyah Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36232/primadona.v1i03.3139

Abstract

This study aims to investigate the effect of Project-Based Learning (PjBL)-based Student Worksheets (LKPD) on the topic of Plant Parts on the IPAS (Science and Social Studies) learning outcomes of Grade IV students at SD YPK Inamo, Sorong Regency. A pre-experimental design with a one-group pretest-posttest scheme was employed, involving 15 Grade IV students as research participants selected through saturated sampling. Data were collected using a multiple-choice IPAS test and a student activity observation sheet. Reliability testing using Cronbach’s alpha yielded coefficients of 0.922 (pretest) and 0.935 (posttest), both exceeding the threshold of 0.60, confirming instrument reliability. The Shapiro-Wilk normality test confirmed that both pretest (sig. = 0.162 > 0.05) and posttest (sig. = 0.345 > 0.05) data were normally distributed. The pretest mean score was 54.67, with 53.33% of students meeting the Minimum Competency Standard (KKM), increasing to a posttest mean of 85.00 with 73.33% of students achieving the KKM. The paired-samples t-test yielded tₙ​ₓ​ₙ​ₐ​ = 2.958 > tₜ​ₐ​b​ₗ​ₐ​ = 1.761 (df = 14, sig. = 0.010 < 0.05), confirming that PjBL-based LKPD on Plant Parts has a statistically significant positive effect on Grade IV IPAS learning outcomes.
The Effectiveness of Picture Media in Improving Narrative Writing Skills of Grade V Students at Primary School Lisbeth Alfianti Emaury; Ribut Purwojuono; Desti Rahayu
Primary Education Journal (PRIMADONA) Vol. 2 No. 01 (2025): Primary Education Journal (PRIMADONA)
Publisher : Universitas Pendidikan Muhammadiyah Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36232/primadona.v2i01.4128

Abstract

This study aims to examine the effectiveness of picture media in improving the narrative writing skills of Grade V students at SD Inpres 109 Perumnas, Sorong City. A pre-experimental research design with a one-group pretest-posttest design was adopted. The research population comprised all Grade V students at SD Inpres 109 Perumnas, Sorong City, with a purposive sample of 23 students. Data were collected through narrative essay instruments administered as a pretest and posttest, supplemented by observation and documentation. Instrument validity was assessed by expert validators, and reliability was calculated using the Kuder-Richardson 21 (KR-21) formula. Descriptive analysis yielded a mean pretest score of 57.17 and a mean posttest score of 77.21, representing an improvement of 20.04 points (22.80%). Normality testing via SPSS confirmed that both data sets were normally distributed (pretest Sig. = 0.436 > 0.05; posttest Sig. = 0.201 > 0.05). Hypothesis testing through the paired sample t-test produced a t-count of 6.026 against a t-table of 1.68 (df = 22; α = 0.05), indicating that H₀ is rejected and H₁ is accepted. It is concluded that the use of picture media is effective in significantly improving the narrative writing skills of Grade V students at SD Inpres 109 Perumnas, Sorong City.
Co-Authors Cindy Claudya Salamor Lisbeth Alfianti Emaury Mustika Irianti Ribut Purwojuono