The author reports how experimental-type lectures for the local community are carried out in Gunma National College of Technology. While ordinary lectures for the local community have been held since 2002, we started the experimental-type lectures in 2004. In this paper, new experimental-type lectures on air-activated disposable hand warmers for elementary schoolchildren are reported.
Air-activated disposable hand warmers produce heat from the exothermic oxidation of iron when exposed to air. They contain cellulose, iron, water, activated carbon, vermiculite and salt. In order to check the principle, the activated carbon, sodium chloride solution and iron powder were mixed. Immediately, the temperature of mixture increased and reached at ca. 80℃. The reagents used in this investigation are harmless and investigation is relatively easy. Therefore, the air-activated disposable hand warmers are suitable for the theme of experimental-type lectures for elementary schoolchildren.

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Jack London (1876-1916) is one of the greatest storytellers that the United States has ever produced. Although he died young at age 40, he wrote as many as 200 short stories, which were sold to various magazines at high prices and were very popular among readers in the early 20th century. He dealt with a variety of themes: the gold rush in the Klondike, socialism, alcoholism, boxing, hobos, the South Seas, and so on. Of course, it is natural that some of them have become out of fashion as well as out of date. It is surprising, however, that many of them have been regarded as masterpieces by both scholars and amateurs, and have gained the everlasting status in American literature.
Interestingly, there are still such masterworks remaining unknown to the public even in his home country. Above all, Jack London's ghost stories should attract more attention: they are readable and brilliant. For this Review, two horror stories, "Who Believes in Ghosts!" and "The Eternity of Forms," were selected and translated into Japanese from The Complete Short Stories of Jack London, vol. 1 and vol. 3, edited by Earle Labor, Robert C. Leitz, III, and I. Milo Shepard (Stanford UP, 1993).
In Japan, where Jack London's The Call of the Wild and White Fang have been read in several, different translations since the Meiji era, this Japanese version of "Who Believes in Ghosts!" and "The Eternity of Forms" will be also enjoyed and appreciated fully. Indeed, we can consider that Jack London was a genius just because he wrote the former when he was only a high school student.

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Let M be a hyperbolic 3-manifold and k(M) the invariant trace field of M. It is known that that if M is commensurably amphicheirable, the k(M) = k(M), where k(M) is the complex conjugate of k(M). In this paper, we show that the reverse is not true in general. We construct commensurably non amphicheirable hyperbolic 3-manifolds M_k(k = 3,4,…) and show that k(M_k) = k(Mk). We also show that this set containes infinitely many commensurability classes.

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Activity of the optional classes for students of multiple major, which are introduced in 2008 for Gunma National College of Technology, is reported. One of these classes, "Basics for Metallurugy", is taken as an example. Lectures are made not only by faculty teachers but also by external teachers to make the scope of the students wider. Some practical exercises are done expecting practical understanding of the contents. Other trial invention, results of the lectures and so on are also noted.

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We developed a new structure for the DSC comprised of metal substrates. Titanium was utilized for the TiO₂/dye electrode. The platinum thin film with open stripes was prepared for the counter electrode. I-V characteristics for the present cell showed the similar performance to the cell together with the FTO substrate. The FF value was especially larger in the Ti-based cell than in the FTO-based cell.
The photovoltaic properties were not reduced in large amount even for six fold enlargement of the TiO₂/dye electrode; the J_{s c} and the FF decreased only to 70% and 85%, respectively. These results suggest that titanium could replace the metal oxide substrates especially in the large electrodes.

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RYUSUIZAN-ENGI (流水山縁起) is a story narrating the legendary origin both of Rengein (蓮華院) temple and Mizunuma-Jinja (水沼神社) shrine. The manuscript of RYUSUIZAN-ENGI is a hand scroll written in ink in the second half of the Edo period. It is in the possession of Mrs. TOTSUKA Yoko.
Most of the content is concerned with Rengein temple, and the description of Mizunuma-Jinja shrine is in only several lines of the end. The brief outlines of the story are as follows:
In A.D.824, the fearful god of the Mt. Togakushi (戸隠山) and long-nosed goblins of the Mt. Marudake (丸嶽) brought evils in Sannokura (三ノ倉) village, Kozuke province. The imperial Court commannded Fujiwara Sadamichi to exterminate them. Sadamichi prayed the Kannon (観音) sculptured by Jikakudaishi (慈覚大師) for victory. Then he was able to exterminate the fearful god and goblins through the protection of the Kannon. He erected a temple to enshrine the Kannon in it. The temple was named Rengein. After that, Furununo-Myojin (古布明神) was enshrined near the temple. The Myojin is called Misunuma-Jinja by the present.
We are able to associate the name of Sadamichi with Usui Sadamitsu (碓氷貞光) who was a legendary hero in Kozuke province. It is clear that this story was affected by the legend of Usui Sadamitsu and was formed. We should recognize the story as a variation of the legend of Usui Sadamitsu.
In this paper, I have pointed out important characteristics of RYUSUIZAN-ENGI and reprinted the text of it.

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In this study, I have attempted to show the outlines of the five English textbooks used at junior high schools in Gunma and Saitama, Japan, intending to provide useful information for high school or college teachers of English in both the prefectures, especially for the teaching staff at Gunma National College of Technology. The paper deals with the following topics: (1) how each textbook begins, (2) countries referred to, (3) English expressions used in classrooms, (4) what the students will be able to do, (5) contents of the appendices, (6) stories for reading, (7) problems about the current textbooks.
Today's English textbooks for junior high school students in Japan look quite new and so different to older Japanese students of English in that they were written for international communication. With the help of this modern version of English textbooks, the new generation of Japanese is expected to have the ability of speaking English in what we call the global age. This is the very dream of the older generations' because they have been criticized for being very poor at speaking English and have had a sort of interiority complex about it. In fact the new textbooks were made for the young students to learn mainly to talk, rather than to read English.
Therefore it cannot be denied that the present textbooks are much easier to read than those published decades ago. Ironically this fact has brought some new problems: generally speaking, most young Japanese can introduce themselves in easy English and are supposed to have little difficulty in ordering hamburgers at McDonald's in the U.S., though may of them cannot and are not likely to be able to read English to the intellectual extent that their elders used to have achieved. In the near future, a newer and more improved version of English textbooks will be needed in order for the junior high school students-to-be to attain both abilities.

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TOSHI imitates UTAAWASE in which the participants vie and the judge decides superiority or inferiority of their WAKA, so TOSHI was named SHIAWAE. TOSHI was held in the third year of TENTOKU (A.D.)%)), and the oldest SHIAWASE in Japan. The summary of the event of TOSHI is written in TENTOKUTOSHI, so we can learn not only the KANSHI and the victory or defeat but also actual situation of TOSHI. In this note we annotated on the poem No.10.

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When Edna Pontellier, the adulterous heroine in The Awakening, spends the summer in Grand Isle, Louisiana, she is awakened while interacting with the four important Creoles named Léonce Pontellier, Adèle Ratignolle, Mademoiselle Reisz, and Robert Lebrun. Edna's spiritual awakenings initiated by the four Creoles develop over six uncharted challenges, which represent her struggle to define herself outside the social codes of marriage and motherhood. This paper focuses on the time after she comes back from her summer excursion in Grand Isle to New Orleans, and explores her six practical defiant challenges to overcome the normative gender roles.

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The purpose of this study is to clarify the present states and probrem of the physical fitness that the 2^nd year students of Gunma National College of Technology face by analyzing the data of The Ministry of Education and Science Fitness Test.
The result obtained the students for 5 years are summarized as follows:
1) The physical fitness of students were low in comparison with that of the national average.
2) Especially the students was infelior in physical endurance.
3) The physical fitness of the students remained the same level as 5 years.
From the results it is strongly recommended that almost all of the students at Gunma National college of Technology improve their physical fitness by participanting in a variety of sports activity.

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This essay aims to instruct students as to the best way to prepare an essay in Japanese. While at elementary, junior-high and high school emphasis falls on the underlying idea, at higher education educational institutions emphasis is on the logical construction on the essay.

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