Data-logging: effects on practical science

Abstract This paper describes an investigation into the processes and effects of using electronic data-logging in practical science. A pilot study of classical laboratory work in schools was compared with similar tasks performed with data-logging systems. A more detailed exploration of pupils' performance was then conducted through an extensive series of observations in a range of secondary schools. The results reinforce previous indications of the potential benefits of data-logging, but such benefits must be viewed in the curriculum context of the type of measurement activity and the pedagogical context of teaching and learning objectives. The paper concludes with a discussion of the latter issues.     

化学反应速率的计算机数据登录及处理系统

介绍一种计算机数据登录及处理系统，主要用于测定忆醇乙酯皂化反应速率常数的实验。     

Construction of a simple on-line pressure transducer calibrator

A simple pressure calibrator is described which is suitable for the routine on-line calibration of pressure transducers in automatically recording data-logging systems. The calibrator is based on a beam balance approach, and steps have been taken to ensure the stability of the system and the reproducibility of the results.     

The computer as an aid to practical science—studying motion with a computer

Abstract This paper describes the use of two types of physical sensor which enable the microcomputer to be used as a measuring instrument for practical experiments on motion. The systems enable a change of emphasis away from the routine activity of collecting results towards the use of interpreting skills, and are valuable for an investigative style of working in which pupils take a central role in planning and shaping their activity.     

递阶集散型电力管理系统

分析设计了一种利用STD工业控制机和IBM－PC386微机等组成的集散型电力系统以进行参数的计量、检测,该系统采用多级集散型控制方式和共拿内存技术,具有功能强、威本低、使用灵活和较强的抗干扰能力等特点。     

IT in science in the National Curriculum

Abstract  An investigative and exploratory approach to learning science is emphasised in the National Curriculum. This paper discusses the role of Information Technology in encouraging the methods of inquiry suited to this approach. It illustrates how the use of generic software for data-logging and data handling can permeate a broad range of science topics and fulfill the requirements of the National Curriculum for Information Technology capability.