Learn about making qualitative and quantitative observations like a scientist by observing seashells! Students first draw the shells, then write descriptive words that tell what the shell looks and feels like. They make a quantitative observation by measuring the shell and writing down the measurement and how they measured it. On the second page, they write a description of their shell. The challenge is to make their description so detailed and specific that someone else could read their description and pick their shell out of a box of shells. There is a rubric on the bottom of the second page where students can assess their own writing (and make changes if they want) before turning the assignment in.