In this task, students are asked to draw a model that shows what the motion of water molecules look like before and after the water is heated. This task is a classroom-based assessment that is designed to be used independently of any particular curriculum or instructional sequence, and is intended to be used as a formative check of student understanding of an unpacked "part" of a performance expectation (the learning performance described). This task was developed as part of the Next Generation Science Assessment (NGSA) project, and can be found here.
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