Investigating Standard Measures 1:
How can grams help us compare weights?
3. Add objects to the weight line
All Class 10 Mins
Note: If possible, set up the weight line in a place where it can remain for several days, perhaps against a wall.
Meet together at the weight line. Explain that the numbers will now stand for grams and not for steel washers, counting bears, or paper clips. Place the index card labeled “Grams” at the start of the weight line. Let students know the importance of always specifying a unit of measure whenever they talk about the weight of their objects.
Invite each student to add his or her object to the weight line and to say something about its weight. Make sure each child specifies the unit of measure: grams.
