Follow along to learn more about Chapter 9 of the course text!
Citation: DeRosa, D. A., & Abruscato, J. (2019). Teaching Children Science: A Discovery Approach (Ninth ). Pearson.
Chapter 9: Living Things
Learning Objectives:
9.1 Distinguish living from nonliving systems
9.2 Describe relationships among structure and function
9.3 Understand the flow of energy as a unifying theme of life systems
9.4 Describe the interdependence of organisms in an ecosystem
9.5 Explain how inheritance, variations of traits, and natural selection impact evolution
9.6 Discuss how connecting children with the planet and Earth systems precedes and supports education about climate change.
Life is fascinating and incredibly diverse. Because of the seemingly infinite variations, studying and comprehending the life sciences may appear to be overwhelming. However, rather than memorization, considering several big ideas can help us understand life and its complex interactions.
Recognizing the basic needs shared by all living organisms, such as energy to grow and reproduce, is critical to understanding life. Energy is obtained by either capturing stored energy primarily from the Sun during photosynthesis or directly or indirectly consuming the stored energy of photosynthesizers. Specific adaptations in the structures and functions of organisms that help them survive in their environments benefit growth and reproduction. Individual organisms are not required to reproduce in order to survive, but each species requires a robust reproductive strategy in order to survive. Structures and functions for acquiring food, protection, and shelter are among these adaptations.
The variety of life on Earth is incredible. Examining life systems through the lens of energy flow allows us to make sense of the diverse adaptations found in life forms to acquire energy, use energy for life processes, and deal with the byproducts of energy use.
Every form of life is inextricably linked to its environment and the other forms of life that share life-sustaining resources. Any imbalance in one component of the ecosystem has ramifications for the entire system.
Variation among organisms within a species occurs as a result of gene shuffle during egg and sperm formation and the combination of genetic information during fertilization. Random mutations occur, which can result in a structure, function, or behavior that provides an advantage for survival in a specific environment.
Prior to teaching children about climate change, it is beneficial to connect children with the planet and our close ties with Earth systems so that they can appreciate and understand the need to be environmental stewards. If children appreciate and comprehend our reliance on a healthy planet, the need for adolescents and adults to actively address human-caused climate change will be meaningful.
That is all for today!
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