DAFTAR PUSTAKA
http://www.f.unpad.ac.id/bse/Kurikulum_2006/04_SD/kelas04_ipa_poppy.pdf
https://static.buku.kemdikbud.go.id/content/pdf/bukuteks/kurikulum21/IPAS_BS_KLS_IV_Rev.pdf
http://portaluqb.ac.id:808/800/7/LAMPIRAN%20LENGKAP%20ERIA%20CLARITA.pdf