PS.1.a asking questions and defining problems

PS.1.a.2 develop hypotheses indicating relationships between independent and dependent variables

PS.1.a.3 offer simple solutions to design problems

PS.1.b planning and carrying out investigations

PS.1.b.4 apply scientific ideas or principles to design, construct, and/or test a design of an object, tool, process or system

PS.1.c interpreting, analyzing, and evaluating data

PS.1.e developing and using models

PS.1.e.2 evaluate limitations of models