Identify ways in which the representations do not match their original counterparts.
Students will use ideas of system, model, change, and scale in exploring scientific and technological matters.
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Compare very different sizes (large/small), ages (parent/baby), speeds (fast/slow), and weights (heavy/light) of both manmade and natural things.
Compare very different sizes, weights, ages (baby/adult), and speeds (fast/slow) of both human made and natural things.
Make something that can actually be used to perform a task, using paper, cardboard, wood, plastic, metal, or existing objects.
Offer reasons for findings and consider reasons suggested by others.
Record and analyze data to decide if a design solution works as intended to change the speed or direction of an object with a force (a push or a pull).