When students get done with measurement or science process labs, teachers are challenged to find activities to “keep them engaged.” Use this editable Google Drive activity to help them learn and practice standards based lab skills. The film canister challenge requires students to modify the density of a canister till it floats with neutral buoyancy. This mini lab can be set up for the whole class, or materials can be set aside as a “if time” activity. Video review for volume and mass measurem