7th Grade Science Unit 5

UNIT 5 DESIGN Life Science (Matter and Energy in Organisms and Ecosystems) (12 Weeks) Essential Questions ●
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How do animals and plants use food to grow and live? How do humans and animals affect the environment? How do plants transfer energy? How do ecosystems support life? How does matter cycle through ecosystems? How does energy flow through ecosystems? How so groups of living things interact within ecosystems? How do ecosystems change? Knowledge and Skills ●
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Construct a scientific explanation based on evidence for the role of photosynthesis in the cycling of matter and flow of energy into and out of organisms. Develop a model to describe how food is rearranged through chemical reactions forming new molecules that support growth and/or release energy as this matter moves through an organism. Analyze and interpret data to provide evidence for the effects of resource availability on organisms and populations of organisms in an ecosystem. Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem. Construct an argument supported by empirical evidence that changes to physical or biological components of an ecosystem affect populations. Science and Engineering Practices ●
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Developing and Using Models Analyzing and Interpreting Data Constructing Explanations and Designing Solutions Engaging in Argument from Evidence Core Ideas ● Organization for Matter and Energy Flow in Organisms § Plants, algae (including phytoplankton), and many microorganisms use the energy from light to make sugars (food) from carbon dioxide from the atmosphere and water through the process of photosynthesis, which also releases oxygen. These sugars can be used immediately or stored for growth or later use. (MS­LS1­6) § Within individual organisms, food moves through a series of chemical reactions in which it is broken down and rearranged to form new molecules, to support growth, or to release energy. (MS­LS1­7) ● Interdependent Relationships in Ecosystems § Organisms, and populations of organisms, are dependent on their environmental interactions both with other living things and with nonliving factors. (MS­LS2­1) § In any ecosystem, organisms and populations with similar requirements for food, water, oxygen, or other resources may compete with each other for limited resources, access to which consequently constrains their growth and reproduction. § Growth of organisms and population increases are limited by access to resources. (MS­LS2­1) ● Cycle of Matter and Energy Transfer in Ecosystems § Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem. (MS­LS2­3) ● Ecosystem Dynamics, Functioning, and Resilience § Ecosystems are dynamic in nature; their characteristics can vary over time. Disruptions to any physical or biological component of an ecosystem can lead to shifts in all its populations. (MS­LS2­4) ● Energy in Chemical Processes and Everyday Life § The chemical reaction by which plants produce complex food molecules (sugars) requires an energy input (i.e., from sunlight) to occur. In this reaction, carbon dioxide and water combine to form carbon­based organic molecules and release oxygen. (secondary to MS­LS1­6) § Cellular respiration in plants and animals involve chemical reactions with oxygen that release stored energy. In these processes, complex molecules containing carbon react with oxygen to produce carbon dioxide and other materials. (secondary to MS­LS1­7) Crosscutting Concepts ●
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Cause and Effect Stability and Change CCCSS Connections ELA ● Cite specific textual evidence to support analysis of science and technical texts. ● Determine the central ideas or conclusions of a text; provide an accurate summary of the text distinct from prior knowledge or opinions. ● Integrate quantitative or technical information expressed in words in a text with a version of that information expressed visually (e.g., in a flowchart, diagram, model, graph, or table). ● Trace and evaluate the argument and specific claims in a text, assessing whether the reasoning is sound and the evidence is relevant and sufficient to support the claims. ● Write arguments focused on discipline content. ● Write informative/explanatory texts to examine a topic and convey ideas, concepts, and information through the selection, organization, and analysis of relevant content. ● Draw evidence from informational texts to support analysis, reflection, and research. ● Integrate multimedia and visual displays into presentations to clarify information, strengthen claims and evidence, and add interest. Mathematics ● Use variables to represent two quantities in a real­world problem that change in relationship to one another; write an equation to express one quantity, thought of as the dependent variable, in terms of the other quantity, thought of as the independent variable. Analyze the relationship between the dependent and independent variables using graphs and tables, and relate these to the equation. Lesson Outline escience 3000 https://www.escience3000.com Video on cellular respiration: http://app.discoveryeducation.com/player/view/assetGuid/97F84673­DF0F­4D40­95BA­0
AB8C33F0799 Unit 9: Diversity of Living Things ● Chapter 2: Introduction to Multicellular Organisms ○ Lesson 1: Characteristics of Multicellular organisms (“READ” pages 1 and 2 only) ○ Lesson 2: Producers: Plants ○ video on photosynthesis (Photosynthesis): http://app.discoveryeducation.com/player/view/assetGuid/A86A6F01­C6E
B­45E3­9E1E­49210BECE820 ○ Lesson 3: Consumers: Animals ○ ○
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Lesson 4: Decomposers: Fungi Video on food chain: (The flow of matter and energy in the living world): http://app.discoveryeducation.com/player/view/assetGuid/14E21E7C­CB3
3­42FD­BA0E­EFD5BC815597 ○ Video on food chain (Food chain and the food pyramid): http://app.discoveryeducation.com/player/view/assetGuid/A1B68E83­42E
E­49CC­B7D0­1AC45223D0E4 Unit 10: Environmental Science ● Chapter 2: Interactions Within Ecosystems ○ Lesson 1 Levels of Organization in Ecosystems ○ Video (Ecosystems and Biomes): http://app.discoveryeducation.com/player/view/assetGuid/CE4B192B­495
B­414A­BFCC­9870D68BBB9C ○ Lesson 2 Species Interactions ○ Video (Food Chain and Food Web):http://app.discoveryeducation.com/player/view/assetGuid/3851AF38
­CC29­4BC8­8EBD­9585302687F6 ○ Lesson 3 Limiting Factors and Succession ○ Video (Forms of Habitat Changes “Succession”): ○ http://app.discoveryeducation.com/player/view/assetGuid/6886778E­ACD
C­430D­A7EE­1CD833A70A60 ○ Video (Impact of Habitat Changes on Animals “Limiting Factors”): ○ http://app.discoveryeducation.com/player/view/assetGuid/AECB0580­334
6­4081­9B18­655945E6F4A5 Assessment Plan MS­LS1­6. Construct a scientific explanation based on evidence for the role of photosynthesis in the cycling of matter and flow of energy into and out of organisms. [Clarification Statement: Emphasis is on tracing movement of matter and flow of energy.] [Assessment Boundary: Assessment does not include the biochemical mechanisms of
photosynthesis.] Review: eScience Diversity of Living Things Chapter 2 Lesson 2 Think, Review, Apply, After
Lesson Hands­on Lab: eScience Diversity of Living Things Chapter 2 Investigate Test: eScience Diversity of Living Things Chapter 2 test (modified to exclude topics not covered) Science Scope February 2014 Volume 37 Number 6 “Historical Plant Studies” MS­LS1­7. Develop a model to describe how food is rearranged through chemical reactions forming new molecules that support growth and/or release energy as this matter moves through an organism. [Clarification Statement: Emphasis is on describing that molecules are broken apart and put back together and that in this process, energy is released.] [Assessment Boundary: Assessment does not include details of the chemical reactions for photosynthesis or respiration.] Review: eScience Diversity of Living Things Chapter 2 Lesson 3 Think, Review, Apply, After
Lesson Hands­on Lab: eScience Diversity of Living Things Chapter 2 Lesson 3 Investigate Test: eScience Diversity of Living Things Chapter 2 test (modified to exclude topics not covered) Science Scope February 2014 Volume 37 Number 6 “Historical Plant Studies” MS­LS2­3. Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem. [Clarification Statement: Emphasis
is on describing the conservation of matter and flow of energy into and out of various ecosystems, and on defining the boundaries of the system.] [Assessment Boundary: Assessment does not include the use of chemical reactions to describe the processes.] Review: eScience Diversity of Living Things Chapter 2 Lesson 3 Think Review, Apply Hands­on Lab: eScience Diversity of Living Things Chapter 2 Lesson 3 Investigate Simulation Lab: http://www.mhhe.com/biosci/genbio/virtual_labs/BL_02/BL_02.html (living food web) Test: eScience versity of Living Things Chapter 2 test (modified to exclude topics not covered) Science Scope February 2014 Volume 37 Number 6 “Don’t Swat That Fly” MS­LS2­1. Analyze and interpret data to provide evidence for the effects of resource availability on organisms and populations of organisms in an ecosystem. [Clarification Statement: Emphasis is on cause and effect relationships between resources and growth of individual organisms and the numbers of organisms in ecosystems during periods of abundant and scarce resources.] Review: eScience Environmental Science Chapter 2, Lesson 3 Think, Review, Apply Hands­on Lab: eScience Environmental Science Chapter 2 Lesson 3 Investigate Simulation Lab: http://phet.colorado.edu/en/simulation/natural­selection and teacher resources Test: eScience Environmental Science Chapter 2 test (modified to exclude topics not covered) Science Scope February 2014 Volume 37 Number 6 “Don’t Swat That Fly” MS­LS2­4. Construct an argument supported by empirical evidence that changes to physical or biological components of an ecosystem affect populations. [Clarification Statement: Emphasis is on recognizing patterns in data and making warranted inferences about changes in populations, and on evaluating empirical evidence supporting arguments about changes to ecosystems.] Review: eScience Environmental Science Chapter 2, Lesson 3 Think, Review, Apply Hands­on Lab: eScience Environmental Science Chapter 2 Lesson 3 Investigate Simulation Lab: http://phet.colorado.edu/en/simulation/natural­selection and teacher resources Test: eScience Environmental Science Chapter 2 test (modified to exclude topics not covered) Science Scope February 2014 Volume 37 Number 6 “Don’t Swat That Fly”