hipotesisi yang diajukan dalam penelitian ini adalah penerapan model cooperative learning tipe think, pair, share dalam bimbingan klasikal daring dapat meningkatkan kepercayaan diri siswa kelas XII IPA 3 SMA Muhammadiyah 1 Sragen tahun pelajaran 2020/2021. Penelitian ini bertujuan untuk menerapkan bimbingan klasikal daring dengan model cooperative learning tipe think, pair, share untuk peningkatan kepercayaan diri siswa pada siswa kelas XII IPA 3 SMA Muhammadiyah 1 Sragen. Kata Kunci : Kepercayaan Diri, TPS, Daring
PTBK, Program Pendidikan Profesi Guru Bimbingan dan Konseling-FKIP-UKSW. Upaya Peningkatan Kepercayaan Diri Melalui Bimbingan Klasikal Daring Dengan Model Cooperative Learning Tipe Think, Pair, Share Pada Siswa Kelas XII IPA 3 SMA Muhammadiyah 1 Sragen Tahun Pelajaran 2020/2021. According to the mechanical properties, Yong’modulus, tensile strength, strain at break and tenacity results supported that keratin biofiber acts as filler in TPS. From dynamic-mechanical analysis, the keratin biofiber has an important effect on the stor- age modulus (E’) as it increases considerably. This behavior is attributed to the formation of more complex and resistant structures in the composite material. According to the thermogravimetric and rheological analyses, the addition of the keratin biofiber increases the thermal stability of the TPS, especially in combination with FR additives, since the mass loss rate was reduced. Traditional halogen-free Flame Retardant (FR) additives were used for comparison. The materials were compounded by reactive extrusion and injection molding. The keratin biofiber was obtained from tannery industry waste. In this work, the effect of keratin biofiber on the properties of a thermoplastic starch biopolymer (TPS) is investigated.
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