Obj. 1a, 7a, 8a, 8b, 9a, 10a, 11d, 12a, 12b, 20a, 22a, 37, 38
Materials:
Zip-Top Freezer Bag
Heavy cream
Salt (optional)
Plastic knives
Crackers or bread
Instructions:
Pour a small amount of cream into each zip-top freezer bag.
Zeal the bag tightly and place it inside a second bag for safety.
Children shake the bag for several minutes.
Observe how the liquid changes into whipped cream, then butter.
Open the bag and separate the butter from the liquid (buttermilk).
Spread butter on crackers and taste.
Powerful InterACTions - PK3:
What is happening when we shake?
How many times did you shake the bag?
Is it liquid or solid?
Is it thick or runny?
How many tablespoons of yogurt did you scoop?
Powerful InterACTions - PK4:
How many tablespoons of yogurt did you scoop?
What changed?
Why do you think it became solid?
What Happens When We Mix?
How many times did you shake the bag?
What happens if we shake faster?