AbstrakPenelitian ini bertujuan: (1) menghasilkan produk multimedia pembelajaran untuk mengembangkan aspek kognitif pada materi mengenal bilangan anak Palm Kids School Yogyakarta, dan (2) mengetahui tingkat kelayakan produk yang dikembangkan. Penelitian ini merupakan penelitian dan pengembangan yang mengacu pada langkah-langkah desain pengembangan Allesi & Trollip, yang dikelompokkan atas tiga prosedur pengembangan, meliputi: (a) planning, (b) design, dan (c) development yang dilengkapi dengan komponen atribut mencakup standards, ongoing evaluation, dan project management. Penelitian ini menghasilkan produk multimedia pembelajaran yang memenuhi kriteria dan dinyatakan layak sebagai media pembelajaran. Skor penilaian kelayakan produk melalui uji alpha pada ahli materi adalah 3,4 (layak) dan pada ahli media adalah 3,36 (layak). Uji beta menunjukkan skor hasil penilaian guru kelas K1 sebesar 3,7 (sangat layak). Kelayakan produk multimedia pembelajaran pada peningkatan perkembangan kognitif didukung oleh peningkatan perolehan skor hasil belajar kognitif anak K1 yang diketahui dari hasil pretes dan postes anak adalah sebesar 8,7. Kata kunci: multimedia pembelajaran, kognitif anak Abstract This study aims to: (1) produce learning multimedia improve the cognitive aspects of the children of Palm Kids School Yogyakarta in understanding numbers, and (2) determine the feasibility level of the developed product. This research was research and development refering to the steps of developmental design proposed by Allesi and Trollip. The design was classified into three developmental procedures including: (a) planning, (b) design, and (c) development, completed with attributes of component including standards, ongoing evaluation, and project management. This study produced teaching multimedia which meet the criteria and the product is declared feasible as teaching media based on the score of product's feasibility assessment through alpha test by material experts which is at 3.4 (feasible) and by media expert at 3.36 (feasible). Furthermore, the beta test conducted by teacher of K1 class showed the score of 3.7 (highly feasible). The product's feasibility assessment of the teaching multimedia in improving the development of cognitive aspects was supported by the score of cognitive learning outcomes of the children in K1 class was observed by pretest and post-test showing 8.7.

The purpose of this study was to determine the influence of learning resources of engineering mechanics modules on student learning outcomes in mechanics subjects in vocational high school (VHS) 1 Sedayu. This study used an experimental method with a nonequivalent control group design. Experimental research designs used are pre-experimental designs, true experimental designs, factorial experimental designs, and quasi-experimental designs. The sample used was class X TP A as a control group and X TP C as an experimental group. The results of this study indicate that there is a significant increase in achievement in the experimental group students after using improved learning media.

One of the creative industries with rapid growth is the airbrush industry. Airbrush art, especially realist, is identical to the field of automotive engineering in the combination of art and technology. The research is directed to prove how the difficult realist airbrush competency can be achieved by Vocational High School (VHS) students in a short time. Also, the research synchronises the increase in entrepreneurial understanding of VHS students in real business incubation in the realist airbrush industry. The final results show that entrepreneurial learning needs to add elements of art as a stage in the acquisition of real competencies.

This research aims to investigate the effects of angle of attack, Reynold numbers and winglet structure on the performance of Cessna 172 Skyhawk aircraft with winglets variation design. Winglets improve efficiency by diffusing the shed wingtip vortex, which reducing the drag due to lift and improving the wing’s lift over drag ratio. In this research, the specimens are the duplicated of Cesnna 172 Skyhawk wing with 1:40 ratio made of balsa wood. There are three different winglet designs that are compared with the one without winglet. The experiments are conducted in an open wind tunnel to measure the lift and drag force with Reynold numbers of 25,000 and 33,000. It can be concluded that the wings with winglets have higher lift coefficient than wing without winglet for both Reynold numbers. It was also found that all wings with winglets have higher lift-to-drag ratio than wings without winglet where the blended 45o cant angle has the highest value.

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