Exploring the music: a teaching-learning sequence about sound in authentic settings

Background: Research regarding students’ ideas about the nature of sound reveals a variety of conceptions about sound. In order to reconstruct these ideas and explain sound phenomena, researchers’ teaching interventions often make use of everyday-life contexts. However existing research on sound only partially addresses the correlation between the properties of sound and its perceptive characteristics.

Purpose: To identify the evolution of students’ conceptions regarding the nature of sound and its properties (frequency, intensity and frequency spectrum) through a teaching-learning sequence (TLS) about sound phenomena in an authentic musical context. The described TLS consists of three activities aiming students to correlate the properties of sound waves (frequency, intensity and frequency spectrum) with its perceptive characteristics (pitch, loudness and timbre) via the use of smartphone applications.

Sample: Eight students, in the second year of their studies in the Department of Primary Education of the XXX University.

Design and methods: Students’ perspectives on sound and their progression are investigated through a teaching experiment design. Data are collected by recording students’ interviews. Due to the explorative nature of the research qualitative methods of content analysis are used.

Results: The results show that the students’ perspectives on sound evolved, as students managed to consolidate links between their everyday experience of sounds and the underlying science concepts as frequency, intensity and frequency spectrum. The authentic environment and the use of the smartphone’s applications were key factors for the success of the teaching experiment. The interaction with the activities shifted student’s conceptualizations closer to the scientific ones, by communicating every day sound experiences with their scientific interpretation.     

Bumble Boosters: Students Doing Real Science

Bumble Boosters was a lottery grant funded cooperative project between the University of Nebraska – Lincoln Department of Entomology, the Lincoln Public Schools Science Focus Program, and the Lincoln Folsom Children's Zoo. The primary education goal of the project was to create a community of learners to conduct authentic research on bumble bees in Nebraska. Participants were actively engaged in collecting bumble bees and placing nesting domiciles. Internet technology was employed to facilitate networking between project participants. Systematic evaluation was conducted during and after the project.     

The internet as a tool to learn a second language in a technical environment

Second language acquisition is a hard task for teachers, since to achieve the motivation from students to practice a language simulating a real context is very difficult. On the one hand, students are often influenced by their mother tongue and more when they are practising a second language with a partner from the same nationality. On the other, technology is part of our lives and teachers should use all the tools in order to motivate students to learn any topic. So, if we integrate technology in the methodology we use when teaching a second language and students can practise with international partners, the results can be surprising. Chats, scanning texts, games, filling forms, etc. are just some of the activities our students can do in order to improve their command of a second language and also these activities can be used by content teachers in order to complement content learning. In the present paper, we provide some examples of activities designed by collaborating with content teachers based on websites, and then we analyse the effect they produced on students. We contrast the methodology used to propose tasks based on websites and those based on texts, and finally, evaluate their effect on the motivation of students.     

高校校园网中基于WEB应用的安全与对策

随着我国教育部“信息技术课程”和“校校通”工程的进一步普及,各大高校都建立了自己的网络环境,但同时校园网的网络安全问题也变得越来越突出起来．通过对基于校园网WEB应用中的安全风险进行分析,提出了网络安全防范和解决这些隐患的对策．     

对互联网在教育教学中应用的思考

对某些学校应用互联网的现状进行了评议，介绍了如何应用互联网进行教学活动的一次实验情况。     

植物抗真菌病害基因及其应用研究

对几丁质酶基因与β-1，3-葡聚糖酶基因、抗毒素基因(如3’，4’，5’-三羟芪合成酶基因、玉米hml基因、亚麻16基因等)、rip基因、过氧化物酶基因及SAR的抗病基因等植物抗真菌病害基因的特点及作用机理作了阐述，指出了它们在农业生产上的应用价值。     

浅析图书馆人性化设计

以图书馆建设的选址和图书馆室外环境的塑造为出发点，以标志性的建筑设计、复合化的设计理念、多元化的化观为指导思想，从时间到空间布局上展示了服务于各阶层、各行业、各个年龄段读的现代化图书馆形象；以图书馆硬件设施的配置、室内光和色彩的巧妙结合、馆内反映化底蕴的艺术珍藏为介质，结合图书馆现代化的管理模式，多角度、多层次地展示了图书馆建设人性化设计的诸要素，反映了图书馆人性化建设的重要性和必要性。     

传感器技术应用及发展趋势展望

介绍了传感器的定义、分类及作用，阐述了传感器技术在现代生活与科学技术中的一些主要应用．分析了传感器技术的发展趋势以及面临的挑战和机遇。     

浅论高校图书馆人性化管理与服务

人性化管理与服务是一种新的管理思想和服务理念。高校图书馆实行人性化管理与服务势在必行。本文就高校图书馆人性化管理与服务的迫切性及必要性进行了探讨。     

小波分析在信号处理中的应用

论述了小波分析在信号处理中的九大应用.