安積 典子

type:Article 著者らは,小学校若手教員対象の課題探究型理科研修を毎年実施してきた。2020～21年はコロナ禍によりオンデマンドで実施したが,本稿で論じる2022年の研修では対面形式を再開した。再開した対面研修で,オンデマンドの個人学習用に開発したワークシートを,グループの中での個人の学びの支援のために使用した。同じく個人の振り返り用に開発した探究の流れ図の形式を,グループ活動のまとめポスターに使用した。まとめポスターの評価ルーブリックを開発し,グループ活動を評価した。グループ活動の評価と個人のワークシートの記述から,受講者の学習状況を推測した。併せて,受講者の理科の知識や実験技能の実態について知見を得た。 We have conducted problem-solving and inquiry-based science training for young elementary school teachers every year. In 2020~21, it was conducted on demand due to the corona disaster, but in the 2022 training discussed in this paper, the face-to-face format was resumed. In the resumed face-to-face training, worksheets developed for individual learning in on-demand training were used to support individual learning in groups. The form of the inquiry flow chart,which was also developed for individual reflection, was used as a summary poster for group activities. We developed an evaluation rubric of summary posters and evaluated group activities. From the evaluation of group activities and the description contents of individual worksheets, we estimated learning status of the participants. We also obtained knowledge about the actual state of science knowledge and experimental skills of the participants.

type:Article コロナウイルス感染拡大の状況下,小学校若手教員を対象として,探究型理科研修をオンデマンドで実施した。研修実施のため,実験を動画で視聴しながら科学的問題解決の過程を学習するプログラムをGoogle Classroom上に作成した。受講者の到達度評価のためにルーブリックを作成し,評価を試みた。研修の実施と評価から以下の結果を得た。(1)受講者の9割が,オンデマンドプログラムを完全に終了した。(2)3人の評価者による評価の一致度の分析から,ルーブリックの改善のための知見を得た。(3)ルーブリック評価の結果から,科学的問題解決の過程の学びについての受講者の課題が示唆された。(4)水溶液の性質に関する小学校若手教員の知識の現状が明らかになった。 Due to the spread of coronavirus infection, we conducted on-demand teacher training of scientific inquiry activity for young elementary school teachers. To carry out the training, we developed a program on Google Classroom to learn the process of inquiring scientific problems by watching videos of experiments. We also created a rubric to evaluate the achievement of the learners and tried to evaluate it. The following results were obtained from the implementation and evaluation of the training. (1) 90% of the participants have completed the on-demand program. (2) From the analysis of the degree of agreement of the evaluations by the three evaluators, the knowledge for improving the rubric was obtained. (3) The results of the rubric evaluation suggested the young elementary school teachers' challenges in learning the process of solving scientific problems. (4) The current state of knowledge of young elementary school teachers regarding the properties of aqueous solutions has been clarified.

The first example of abnormal Michael reaction of an active methylene compound, 2-acylmethyl-4,4-dimethyl-2-oxazoline with acetylenic ketone in acetonitrile is reported. The reaction accompanies 1,3-migration of the acyl group of the substrate to give 2-(3-acyl-1-buten-4-on-l-yl)-2-oxazoline, which was easily cyclized to 5-acyl-2-pyridone derivatives by treatment with silica gel. Selectivity of the reaction depends on bulkiness of all the substituents of both the substrate and the reagent. The selectivity is interpreted in terms of reduced kinetic acidity of an initial anionic adduct intermediate by both steric and electronic factors.

Aminolysis of nitroisoxazolone affords unsymmetrical 1,1-diamino-2-nitroethenes and carbamoylamidoximes with simple experimental manipulations.

Polyfunctionalized pyrrole 6 is synthesized in the ring transformation of N-hydroxy-3,5-dinitro4-pyridone 4 with enolate 2 derived from diethyl 3-oxogulutarate. The present reaction proceeds with C-N transfer from 4 to 2, which is hitherto unknown manner in similar reactions using dinitropyridone series.

The molecular structure of the title compound, C30H18N3O6P3, is distorted from that observed in related clathrate compounds. The central phosphazene core takes a boat conformation. The peripheral naphthalene rings are not planar and the five-membered exocyclic rings are bent appreciably at the O-atom positions. The packing of the distorted molecules is governed predominantly by van der Waals forces in the crystal.

The host molecule lies on the crystallographic two-fold axis. The centroid of the guest, p-xylene, is located at a center of symmetry. The host forms a cage-type 1:1 clathrate with p-xylene. The p-xylene is accommodated in the cage-like cavity produced by the naphthalenedioxy groups of the host molecules.

Molecular imaging by high resolution electron microscopy was applied to observation of an interface of organic double-layered thin films grown epitaxially by vacuum deposition. In the case of the interface between Ge-O-phthalocyanine (GeOPc) and Cl-tetraphenylporphinate-Fe (ClTPPFe), electron diffraction showed that the tetragonal ClTPPFe crystals grew epitaxially on the tetragonal GeOPc substrate crystals keeping the a- and c-axes parallel to those of GeOPc, respectively. A plane view projection of the double-layer by high resolution imaging has revealed that the ClTPPFe crystal began to crystallize from a point shifted about one fourth of the unit cell length along [110] of the GeOPc crystal.