Formative Assessment
Formative Assessment icon

Do students understand that the volume of 8cc of plastic modeling clay stays the same even if you change the shape?

Listen to the students' discussion of their new 8cc plastic modeling clay shapes as evidence of their current understanding of volume. Joan listens for these ideas as she interprets their responses to her questions. Note that all the sculptures on Joan's tray have the same 8cc volume.

As a next step, Joan shows a tray holding all of the 8cc objects and asks, "If I made a volume line, where would we put each of these objects?"