How much do the cubes weigh in grams?
3. Add the cubes to the weight line
Have students gather at the weight line with their cubes, and draw attention to the unit label: “Grams.” Invite one or two students at a time to place their cubes on the line, taking their weight data from the class table or from their notebooks. Allow multiple cubes of the same material on the weight line to give everyone a sense of completion for this part of the work.