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ABSTRAKHasil penelitian menunjukan bahwa produk LKS IPA materi penggolongan hewan berdasarkan jenis makanannya menggunakan pendekatan kontekstual dengan lima tahapan yaitu, mengamati, menanya, mengumpulkan informasi/mencoba, menalar, dan mengkomunikasikan. Dari hasil Analisis validasi LKS oleh ahli materi dan media menunjukan bahwa kualitas LKS sangat baik dengan rata-rata 3,29. Sedangkan analisis validasi kepraktisan LKS oleh ahli pendidikan dan siswa menunjukan bahwa kualitas LKS baik dengan rata-rata 3,79. Terdapat perbedaan signifikan peningkatan hasil belajar IPA siswa kelas IV sebelum menggunakan LKS dan sesudah menggunakan LKS. Dapat dilihat peningkatan hasil Pretest dan Postest. hasil Pretest menunjukan bahwa nilai ratarata pelajaran IPA 9, sedangkan hasil Postest menunjukan bahwa nilai rata-rata pelajaran IPA 9,3. Hal ini menunjukan bahwa nilai Postest lebih bagus dari pada nilai Pretest maka LKS yang dikembangkan pada penelitian ini dapat dikatakan efektif. Kata Kunci : LKS Kontekstual, IPA, ADDIE.ABSTRACTThe results of the study showed that the product of the Natural Sciences LKS classifying animals based on the type of food using a contextual approach with five stages, namely, observing, asking, gathering information, reasoning, and communicating. From the results of the validation analysis of the worksheets by material and media, experts showed that the quality of worksheets was very good with an average of 3.29. While the validation analysis of the practicality of student worksheets by educational experts and students shows that the quality of worksheets is good with an average of 3.79. There is a significant difference in the increase in science learning outcomes of fourth-grade students before using LKS and after using LKS. Can be seen an increase in Pretest and Posttest results. Pretest results show that the average value of science lessons 9, while the posttest results show that the average value of science lessons 9,3. This shows that the posttest score is better than the pretest value so the worksheet developed in this study can be said to be effective. Keywords: Contextual LKS, Natural Sciences, ADDIE.

The purpose of this study was to find out the difference between student learning outcomes by using animated video media with image media or not using animated videos, by conducting experimental research that is nenoquivalent control group design. The study sample of SDN Larangan 09 kela IIIA amounted to 25 students (control class) and class IIIB amounted to 25 students (experimental classes) resulted from the calculation that the average pretest and postest grades of control classes amounted to 5.42 and 5.42. While the results of the calculation of the pretest and postest experimental class average values were 5.26 and 6.82. So it can be concluded from the research that the use of animated video media significantly affects the learning outcomes of students of class III SDN Larangan 09 Tangerang.

The objectives of this study are 1) to know the meaning of social media and learning achievement, 2) Knowing the positive and negative impacts of social media, 3)Benefitssocial media on student achievement 4) Social media relations with learning achievement. The type of research used is qualitative research using the library method, collecting data by considering the results review theses, journals, books and studies relevant to the impact of the media social impact on student learning achievement. The data that the author focuses on is data the impact of social media on student learning achievement. Can be concluded that social media greatly affects learning achievement, the influence is in the form of negative influence good or bad, so the role of parents and teachers at school is needed is expected to help students in improving learning achievement through social media.

Psychiatric disorders in a sample of spouses of probands with recurrent Primary Affective Disorders (PAD) and in their first degree relatives were evaluated and compared with those in the spouse of control subjects without psychiatric illnesses. No differences were found in the risk for PAD, but spouses of PAD patients and their respective first degree relatives manifested a greater incidence of affective spectrum disorders.