PS1+(3-4)–1


 * Students demonstrate an understanding of characteristic properties of matter by …**

1a identifying, comparing, and sorting objects by similar or different physical properties (e.g., size, shape, color, texture, smell, weight, __temperature, flexibility)__.

__1b citing evidence (e.g., prior knowledge, data) to support conclusions about why objects are grouped/not grouped together__.


 * Students demonstrate an understanding of physical changes by …**

__1c observing and describing physical changes (e.g. freezing, thawing, torn piece of paper).__