#### Materials:

bathroom scale
chart paper
balance scales
two small gift bags
feathers
rocks
sticks
grass
wood chips
sand

#### Instructions:

1. Ask the children to guess how much they weigh. Write each child’s name and
guess on a piece of chart paper.
2. Show the children the bathroom scale and explain how it works. Weigh each
child and record each child’s actual weight on the chart next to her guess.
Talk about the difference in guessed and actual weights.
3. Use the bathroom scale to weigh other things in the room. Be creative!
Experiment!
4. Show the children the balance scale and explain that it doesn’t show how
much something weighs but shows which of two objects weighs more.
5. Show the children the feathers and rocks. Ask them to guess which one
weighs more. Ask them to fill one small gift bag with feathers and the other
bag with rocks.
6. Place the bag of feathers on one side of the balance scale and the bag of
rocks on the other side. Talk about the result.
7. On a large piece of paper write, “Which is heavier?” Under the heading, write,
“Rocks are heavier than feathers.”
8. Weigh other objects the same way, such as sticks and grass, wood chips and
sand, and grass and sand. Remember to record each result on the paper.
9. Let the children experiment with the materials during center time.

 Book: The GIANT Encyclopedia Of Learning Center Activities For Children 3 to 6 Math/Numbers/Reasoning Numbers Mathematics Cognitive 3 through 4 Years Old Large Group