Grams and kilograms are new concepts to most third graders, and the only way to truly understand something that you have very little experience with (or none at all), is to spend some time working with it.
So that is what we did! We did a lot of hands on activities so we all had a good understanding of what exactly a gram is and what exactly a kilogram is.
Check out the video below that explains what we did.
*Note: You might notice that we are using both the words weight and mass. We did discuss the difference between weight and mass (Mass is the measure of how much matter is in an object, weight is a measure of how hard gravity is pulling on that object), but that is a discussion that will continue as we understand this concept better. The term mass was new to us!
When we finished, we went on one more scavenger hunt. A Skitch Scavenger hunt!
Skitch is an app that allows us to annotate a photograph very easily.
The students went in the room and the hallway, took pictures of items, then used Skitch to tell me if the mass of that item would be found with grams or kilograms. Here are some of our Skitch Scavenger hunt pictures below!
We had a lot of fun investigating grams and kilograms. We would love to hear from you! Look around you. Do you see any items that you would use grams to find their mass? Or maybe some items that you might use kilograms instead? Comment below, we would love to hear what they are.