5th Graders: The students are starting a new unit on living systems. Our first investigation has been exploring what all living cells need (food, water, waste disposal, gas exchange), and looking at the way the human body provides cells with those through the circulatory and respiratory systems. The students have been reading, asking questions, and watching a video about these concepts. We also have been having fun measuring our pulse, and experimenting with how exercise affects it! Key questions: What do living cells need? What is the purpose of the circulatory system and the respiratory system? What does the left side of the heart do? The right side? Why is your blood blue in some areas and red in others?
4th Graders: The fourth graders have been continuing their investigations of how water and other natural forces can shape the land. We spent Monday experimenting with sand, clay and water, and watching erosion take place. Later this week, the students read about and studied pictures of both erosion and deposition. Key questions: When rock is washed away, what is this process called? How can the rock in the mountains become sand on the beach? Why did the clay move further than the sand in our stream tables? What is the area of deposition at the mouth of the river called?
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