J. E. Tarigan, A. F. B. Sitepu, Y. C. Sinaga, and G. N. Sihombing, “Improving Students’ Learning Outcomes Through the Use of Bigbook Media in IPAS Learning for Grade IV Students of SD Negeri 064023 Kemenangan Tani”, <meta name="google-site-verification" content="hk1EvV2s9SCchFUV_4f7GgLdW5pQDckkxwSCWkj4stU" />, vol. 4, no. 2, pp. 2211–2216, Aug. 2026.