1d Make predictions , 2b Form and test hypotheses. 2d Collect and record data 2e Analyze data and draw inferences 3d Seek and weigh evidence before drawing conclusions. 5d Explain and predict how parts of a system relate 6d Construct diagrams to describe and summarize data. 7d Distinguish between factual statements and inferences.
Students discover what is in a black box through careful observation, hypothesizing and testing.
One or more black boxes. 2 Graduated cylinders or beakers- to measure amounts of water if students ask or direct. In the bottom of the canister stuff a wad of cotton or tissue. Put the lid on the canister and seal it . Lock the box.