沈むか浮くか？ - プラスチック卵の実験編

In this course, students will experiment, predict, and observe which objects cause plastic eggs to sink. 

1. We will use a variety of objects, such as pennies, puff balls, rocks, and decorative stones to test our experiment. We will place these objects, in varying numbers, inside the plastic eggs. We will label our eggs so we know what item is inside and how many of that item, this way we can compare which ones float and which ones sink . 

2. Students will predict which items they think are more likely to sink and which ones are more likely to float. We will create a hypothesis. We will also discuss how much of an item we think will cause the egg to sink. We will discuss the scientific method during this process.

3. We will place the eggs in a bowl of water and see if the egg floats or sinks! We will discuss if our predictions and hypothesis were correct or incorrect.

4. We will attempt to make the egg complete the opposite action. So, if it sinks we will try to make the egg light enough to float and if it floats we will attempt to make it sink. We will use trial and error to test our theories, engaging in some aspects of the scientific method. 

Book List:
The Science of Animal Movement: How Fish Swim By: Emma Huddleston
Let's Try It Out: in the Water By: Seymour Simon, Nicole Fauteux  Illustrated by: Doug Cushman
Floating or Sinking By: Julie K. Lundgren
What Floats? What Sinks?: A Look at Density By: Jennifer Boothroyd

Videos:
Do You Know?
Shark Buoyancy
Buoyancy

*** It's highly encouraged for students to set this experiment up at home to get the most out of this course!