Middle School (11-14 years)

young woman jogging front cement wall101010In this activity students record motion graphs. They are asked to walk in front of the Motion detector and a graph of distance vs. time is being plotted real-time on the computer or data-logger screen during their motion. Students are asked to interpret resulting graphs. Activity Graphing distance (demo)
matchIn this activity students walk in front of the motion detector to match the given distance vs. time graph Activity Match the graph (demo)
foodThis is an activity in which different student groups can investigate different items of food. A sample of a food of known mass is burned, heating a calorimeter. Students record the temperature of water heated in the colorimeter, calculate the energy transferred to the water, and hence estimate the energy present per unit mass of food. Activity Energy content of food (demo)
reactionIn this activity students measure the temperature change in four chemical reactions and classify the reactions as exothermic or endothermic. Activity Endo- and exothermic reactions (demo)
evaporationIn this activity students investigate the process of evaporation and use a temperature sensor to record temperature changes during evaporation of water and alcohol. Activity Evaporation of water (demo)
ethanol moleculeIn this activity students investigate process evaporation. They use a temperature sensor to record temperature changes during evaporation of alcohols. They investigate how the molecular mass of evaporating alcohol affects the rate of evaporation. Activity Evaporation of alcohols (demo)
Stearic acidIn this activity, the cooling of stearic acid, changing from liquid to solid is studied. Students record the temperature of stearic acid as it cools. Activity Cooling curve of stearic acid (demo)
music-sound-wavesIn this activity students use the sound sensor and record sound waveforms from tuning forks. Activity Sound waves (demo)