In these videos, Dr. Grisham focuses on the core science concept volume. She also talks about material, density, and weight. You’ll see her talk and think about volume as a three dimensional measure. Linda has grappled with the challenges of measuring liquid volumes throughout her professional life as a pharmacologist and science educator. She stresses the need to know exact volumes and she’s careful to point out the many ways that error can be introduced into her measurements. Our students have to grapple with volume measures as well. It can take a lot of time and practice to develop this understanding. Knowing how a scientist thinks about these activities will help you support your students as they compare and measure liquid volumes. Teachers will be able to listen to students’ reason from evidence.