NGSS 2-PS1-1: Plan and conduct an investigation to describe and classify different kinds of materials by their observable properties.Things that float are light for their size.Things that sink are heavy for their size.Whether something floats or sinks has to do with how heavy it is and how big it is.Whether a substance floats or sinks is a property of the substance.
Students will develop an understanding that whether a substance sinks or floats is a property of the substance. Students will be able to plan and carry out an investigation to compare the property of sinking and floating between different substances.
