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Interdependence of Life: Species Relationships


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Details

Type of Product:Science Object
Average Rating:
 based on 3 reviews
Publication Title:Interdependence of Life SciPack
Grade Level:Elementary School, Middle School, High School


Description

Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the second of four Science Objects in the Interdependence of Life SciPack. It explores species relationships.

All organisms, both land-based and aquatic, are interrelated by their need for resources. One example of a network of interconnections is called a food web; it is a model of the interdependence among the organisms in populations of different species. Predator-prey and parasitic relationships are examples of interspecies relationships, interdependence that occurs among organisms in different species in a food web.

Interspecies relationships can be categorized as positive, negative, or neutral for the fitness of the individuals and their populations who are involved. A change in the population of one species can affect the population of another species. Intra-species relationships, or interdependence among organisms of the same species, can also affect a population.

Learning Outcomes:

  • Given the specific nature of an interspecies relationship, categorize the relationship between two interrelated populations as positive, negative or neutral for each population.
  • Given a description of a change to one population depicted in a food web, predict changes that might occur in the size and rate of growth for other populations depicted in the food web.
  • Given a line graph displaying changes in population sizes and rates of growth for a number of populations in a community, along with a description of the trophic relationships among populations, generate plausible hypotheses about causes of the changes depicted in the graph.


Ideas For Use

Science Objects are two hour learning experiences teachers can use to enhance their understanding of a particular scientific concept. Teachers can access any topic “on demand” from the Internet. Topics are based on the science literacy goals in the national standards (NSES, Science for All Americans, Benchmarks, and the Atlas of Scientific Literacy) and tied to state standards.

Each Science Object provides an understanding of the science content by providing a structured set of learning experiences through simulations and practice assessments. Science Objects challenge teachers to explore and explain real world phenomena and are founded on the principle that learners must be challenged with a problem, observation, data, etc., in order to develop scientific understanding. Science Objects utilize the five phases of inquiry-based learning: Engage, Explore, Explain, Elaborate, and Evaluate

Learning Outcomes:

  • Given the specific nature of an interspecies relationship, categorize the relationship between two interrelated populations as either positive, negative or neutral for each population.
  • Given a description of a change to one population depicted in a food web, predict changes that might occur in the size and rate of growth for other populations depicted in the food web.
  • Given a line graph displaying changes in population sizes and rates of growth for a number of populations in a community, along with a description of the trophic relationships among populations, generate plausible hypotheses about causes of the changes depicted in the graph.

Additional Info

Science Discipline: (mouse over for full classification)
Biosphere
Freshwater
Oceans
Biomes
Competition
Food web
Predation
Symbiosis
Adaptations
Natural selection
Conservation
Environmental change
Pollution
Analyzing data
Asking questions
Classifying
Collecting data
Communicating
Hypothesizing
Interpreting data
Observing
Predicting
Intended User Role:Elementary-Level Educator, High-School Educator, Middle-Level Educator, New Teacher, Professional Development Provider
Educational Issues:Inquiry learning, Professional development, Teacher content knowledge, Teacher preparation, Teaching strategies

Technical

Resource Format:application/x-shockwave-flash, audio/mp3, text/html, video/quicktime
Installation Remarks:Run the Science Objects System Check to ensure that your system is capable of viewing the simulations: http://ecommerce2.nsta.org/system_check/
Requirements:Requires Macromedia Flash Player and Apple Quicktime Player


National Standards Correlation

This resource has 9 correlations with the National Standards.  
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This resource has 9 correlations with the National Standards.  
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  • Life Science
    • Organisms and environments
      • All animals depend on plants. Some animals eat plants for food. Other animals eat animals that eat the plants.
      • An organism's patterns of behavior are related to the nature of that organism's environment, including the kinds and numbers of other organisms present, the availability of food and resources, and the physical characteristics of the environment.
      • When the environment changes, some plants and animals survive and reproduce, and others die or move to new locations.
      • All organisms cause changes in the environment where they live. Some of these changes are detrimental to the organism or other organisms, whereas others are beneficial.
    • Regulation and behavior
      • All organisms must be able to obtain and use resources, grow, reproduce, and maintain stable internal conditions while living in a constantly changing external environment. (5-8)
      • An organism's behavior evolves through adaptation to its environment. (5-8)
    • Populations and ecosystems
      • Mutualism is a cooperative partnership between two species.
      • Parasites are organisms that live in or on another organisms.
    • Interdependence of organisms
      • Organisms both cooperate and compete in ecosystems. (9-12)


Customer Reviews
good activities
  Reviewed by: Ashley Bax on April 8, 2013
  This lesson had good interactive tools and questions asked throughout.

Excellent predator prey graphs
  Reviewed by: Roselle Leone on March 8, 2013
  This object targeted all relevant standards on this topic. It provided an excellent illustration of the interdependence of predator and prey in graphical form.

Fun, informative, and interactive
  Reviewed by: Kirsten Tuhus on February 4, 2013
  I never tire of hearing about the different ways that species interact with one another. This Science Object was full of wonderful examples of all of the different types of relationships that plants and animals have with one another, including mutualism, commensalism, ammensalism, neutralism, and parasitism. While I was familiar with most of these terms, the Science Object presented them in such a way that I’m pretty sure I have got them all down pat. They repeated the concepts several times, gave a lot of different examples, and gave me plenty of opportunities to practice what I had learned, through questioning and also through an interactive game. I thoroughly enjoyed being a snowshoe hare and making decisions about where I should go in order to escape predation and get plenty to eat. This Science Object also helped me solidify my understanding of trophic levels and biomass pyramids. The graphics were very helpful, and I appreciated the interactive element in which you change the amount of hawks, snakes, kangaroo rats, and creosote bushes to see how other species are affected when there is a change in the population of one species. I would highly recommend this Science Object to anyone. I took a few ecology classes in college, and I have taught many of these ideas to elementary students before, so even though the concepts were not new to me, they refreshed my understanding and also gave me fresh examples of the different relationships between species. I’d like to figure out some ways to transform the interactives into hands-on classroom activities as part of an ecosystem unit for fourth grade.

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