Ruang keluarga harus sehat dan nyaman agar penghuninya dapat berkarya untukmeningkatkan produktifitas. Kondisi fisik lingkungan ruang keluarga yang tidak memenuhi syaratdapat menyebabkan gangguan penyakit. Data jenis penyakit tahun 2015 di wilayah Puskesmas IISumbang menunjukkan jumlah penderita yang tertinggi adalah penyakit ISPA (4.183 orang),terbanyak berada di Desa Kotayasa (1.151 orang).Penelitian bertujuan untuk mengetahui adanya faktor-faktor yang berhubungan dengankondisi suhu dan kelembaban ruang keluarga di Dusun Kotayasa, Desa Kotayasa, kecamatanSumbang, Kabupaten Banyumas.Jenis penelitian adalah observasional dengan pendekatan cross sectional. Metodepengumpulan data menggunakan wawancara, observasi langsung, pengukuran dan perhitungan.Kondisi suhu ruang keluarga yang memenuhi syarat 68,9%,yang tidak memenuhi 31,1%.Kondisi kelembaban yang memenuhi syarat 54,4%, yang tidak memenuhi 45,6%. Ada hubungan yangbermakna antara jenis lantai dengan suhu dan kelembaban, luas ventilasi dengan suhu tidak adahubungan sedangkan dengan kelembaban ada hubungan, pencahayaan dengan suhu dan kelembabantidak ada hubungan, ada hubungan jenis dinding dengan suhu dan kelembaban, kepadatan penghunitidak ada hubungan yang bermakna dengan suhu dan kelembaban.

Titration was one of the chemistry concepts that require practicum in the learning process. But, many obstacles in the real laboratory such as lack of material, tools, and times made the real laboratory less optimal. These lacks could be solved by used Virtual Reality (VR) technology. VR made a big contribution to the education sector. One of them was implementing it in the development virtual laboratory. Virtual laboratory plays an important role in the learning process. It was possible to manipulate 2D (virtual world) objects similar to 3D (real world) objects. This study developed Virtual Reality Laboratory (VRL) to analyze its characteristics, quality, and impact on students' cognitive achievement. A research and development (R&D) method with a post-test design was used in this study. The subjects of this study were 102 high school students in class XI. The samples were divided into 3 classes, namely CC (real laboratory); EC-1 (VRL); and EC-2 (real laboratory and VRL). The results of students' cognitive achievement were analyzed using ANOVA and it was found that there were significant differences in students' cognitive achievement in the three classes. Students who used VRL had higher cognitive achievement than students who used real laboratory. VRL also received excellent grades from chemistry educators. Thus VRL is very useful as a supplement in the teaching and learning process.

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