Data aquisition experiments for Science Lessons Elena-Mihaela Garabet, Ion Neacşu,

Abstract. We are trying to develop our studies on exploring and analizing the real world from the Science teacher’s point of view, under the frame of the Socrates-Comenius “Hand’s on Science ” (110157-CP-1-2003-1-PT). We are still using our data acquisition board NIDAQ 6013 which explores the real word (experimental devices, electric circuits, aqueous solutions, plants, human beings) by transforming the computer in a chronometer, a voltmeter, an ammeter, a dynamometer, a teslameter, a Ph-meter, a microphone, a thermometer, a pletysmograf, etc,. Our contribution consists of the choosing and the coupling of the sensors with the data acquisition board and of the analyze of the signals we get. By using the classical set of a magnet (placed on the car) and a coil (with a fixed position), we can register the position of a race car in the circuit, by using a sonic explorer (a toy), we have registered the sonic interference, for the simulation of an acid rain we have used a pH electrode, for measuring the temperature we have used a thermistor, for the muscle fatigue we have used a Force Sensor (bought by the HSCI Network), for the study of the transpiration of a plant we have used a humidity sensor, for the study of the magnetic field we have used a Magnetic Field (bought by the HSCI Network). This paper shows a short presentation of these experiments, of the way of gathering and analyze the real signals and the fantastic impact they have on our lessons