The 1 : 1 p-But-calix[8]arene complex of C ~O is micelle-like, with a trimeric aggregate of fullerenes surrounded by three host molecules each in the double cone conformation, a structure that can accommodate one C70 unit by isomorphous replacement of one C60.

Isostructural species are found in the solid state for the supramolecular 1:2 complexes of a calix[6]arene molecule and either C or C (see the structure of the [(calix[6]arene)(C ) ] complex on the right). The calixarene assumes a double-cone conformation, and the overall structure is a result of the complementarity of the building blocks with respect to size and form-in other words, the shallow calixarene cavity and the fullerene surface have similar curvatures.

This study aimed to examine the effect of Kolb's learning styles on chemical learning activities and achievement of reaction rate taught by inductive guidedinquiry learning. The population was eleventh grade Science students of a senior secondary school having relatively good academic input based on national testing results in Bali, Indonesia. Samples involved the entire students of five classes taken by cluster sampling from the whole nine classes of the population. Data were collected by Kolb's learning style inventory for the learning styles, observation and document recording for learning performances, post-test for the cognitive achievement, and questionnaires for student's perceptions. Data analyses were conducted qualitatively in assigning the learning styles, and describing learning performances and perceptions, and used ANOVA followed by Scheffé's post hoc test for the effect of learning styles on the cognitive achievement. The results showed: (1) the student learning styles were 35.8% Convergers, 30.0% Assimilators, 17.5% Divergers, and 16.7% Accommodators; (2) learning styles significantly affected the achievement with only superiority of the Convergers over the accommodators; and (3) the inductive guided-inquiry learning of chemical topic which involves concrete evidences via laboratory work was fruitful for all learners of all learning styles.

This study aimed at describing and explaining chemistry learning problems viewed from conceptual change model and misconceptions of students. The study was qualitative research of case study type conducted in one class of SMAN 1 Singaraja. Subjects of the study were a chemistry teacher and students. Data were obtained through classroom observation, interviews, and conception tests. The chemistry learning problems were grouped based on aspects of necessity, intelligibility, plausibility, and fruitfulness. Data were analyzed descriptively. The results of the study showed that the chemistry learning problems related to the aspect of necessity were that the teacher did not carry out the laboratory work and did not discuss the properties of the buffer solution. The problems related to aspects of intelligibility were the teacher asked successive questions, answered her own questions, gave wrong information, made unclear and wrong analogies, and did not ask student reasons. The problems related to the plausibility aspects were that the teacher had less emphasis on the importance of context and neglected the students' alternative conceptions. The problems related to the fruitfulness aspects were that the teacher was less likely to provide complex problems especially with regard to the application of the buffer solution in everyday life. Students experienced misconceptions on some concepts of buffer solution.

Abstracts: What are Responses and Expectations of Senior High School Students to Blended Learning? The effectiveness of learning innovation could not ignore an important aspect of student’s characteristics. The purposes of this research were to (1) describe the response of high school (SMA) students towards learning chemistry delivered by blended learning (BL), and (2) to explore the expectations of students towards the online content and chemistry learning management deli-vered by BL. To obtain the responses and the expectations of students, 140 questionnaires distri-buted online to the grade nine of class XI MIA SMA students (respondents) in seven SMAin seven-regencies in Bali: SMAN 1 Gianyar, SMAN 1 Sidemen Karangasem, SMAN 2 Semarapura, SMAN 5 Denpasar, SMAN 1 Singaraja, SMAN 1 Kuta Utara, and SMAN 1 Kediri Tabanan. The result of the research shows that only 110 respondentscompleted a questionnaire of students responsesabout BL and 106 respondents completed questionnaires of students’ expectations towards online content and management of BL. SMA students gave a positive response to the application of BL and provi-ded important inputs which were useful fordeveloping online content and management of BL for se-nior high school students.Key Words: blended learning, chemistry instruction, online contentAbstrak: Apa Respons dan Harapan Siswa SMA tentang Blended Learning? Efektivitas suatu inovasi pembelajaran tidak bisa mengabaikan aspek penting karakteristik siswa. Tujuan penelitian ini adalah untuk (1) mendeskripsikan respons siswa SMA terhadap pembelajaran kimia yang di-sampaikan secara blended learning (BL), dan (2) menjaring harapan siswa terhadap konten dan pe-ngelolaan pembelajaran kimia yang disampaikan secara BL. Untuk memperoleh gambaran tentang respons dan harapan siswa tersebut, 140 angket disebarkan secara online ke siswa SMA kelas XI MIA yang tersebar di 7 SMA di 7 kabupaten/kodya di Bali, yaitu SMAN 1 Gianyar, SMAN 1 Side-men Karangasem, SMAN 2 Semarapura, SMAN 5 Denpasar, SMAN 1 Singaraja, SMAN 1 Kuta Utara, dan SMAN 1 Kediri Tabanan. Hasil penelitian menunjukkan bahwa hanya 110 siswa yang mengisi angket respos siswa terhadap BL dan 106 responden yang mengisi angket harapan siswa terhadap konten online dan pengelolaan BL. Siswa SMA memberikan respon yang positif terhadap penerapan BL dan memberikan masukan yang berguna untuk mengembangkan konten online dan pengelolaan BL untuk siswa SMA.Kata-kata Kunci: blended learning, konten online, pembelajaran kimia