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Welcome to Webinar! The webinar will begin shortly. You may not hear any audio until the webinar begins. You will not need a microphone. Audio You have two options for audio (either will work): • Computer audio - Select the Use Mic & Speakers button in the audio area • Telephone audio – Select Telephone and call the number listed. Then enter the access code and pin numbers. Other helpful tips Use arrow to open and close full control panel Raise your hand Use the question window if you need assistance Mark Watrin: Science Coordinator ESD112 Understanding the Science Test Mark Watrin Science Coordinator ESD112 Predictability and Feedback Create realistic models with feedback loops, and recognize that all models are limited in their predictive power. Uncovering Teacher Ideas about the Science State Test • How Much of EOC Biology is: – – – – – Systems Inquiry Application Cell Processes Populations in Ecosystems – Evidence for Evolution • Make a Pie Graph Is 50% of your instruction on Systems Inquiry & Application? 50% of the test is! Cells 2007 Lifting a Load % 2008 How that Plant Got There Juan de Fuca 100 90 80 70 60 50 40 30 20 10 0 Students Struggle with the Short Answer Questions 2007 MC 2008 MC 2011 MC 2011 – Source of matter in a living system = 34% 2007 SA Energy inputs and outputs Open for Questions? • About Systems Is it a System? • Volume 4 page 81 Systems Science Standards Glossary Systems. An assemblage of interrelated parts or conditions through which matter, energy and information flow. How do you talk about Systems • Write down 10 words that your students should hear, use and understand to perform well on Systems questions. 9-12 Systems Feedback Equilibrium Input Output Matter Energy Positive Feedback Negative Feedback Static Equilibrium Dynamic Equilibrium Model Limits Changes models High School Systems Feedback Systems within systems Model limits Predict model limits 2008 Where did that plant come from? 4 Mineral nutrients were added to the water in which the bean plants were grown. What is one reason plants need mineral nutrients? o A. Plants need mineral nutrients to eliminate energy. o B. Plants use the mineral nutrients as a source of energy. o C. Plants use the mineral nutrients in the process of making food. o D. Plants need mineral nutrients to take the place of carbon dioxide. Understanding the input of matter 54% 38% Open for Questions? • About Systems Subsystems in this System Self Regulating (Negative) Mitochondria Cytoplasm Matter-Glucose , O2 Self Reinforcing (Positive) Energy- chemical Systems it is connected to. Circulatory in humans Equilibrium: Cellular Respiration Lack of glucose or oxygen in the cytoplasm triggers increase movement across the cell membrane. “Fill in the Blanks” they are graphic organizers to guide discussions. Static or Dynamic- input = output –yes Predict the results of a change in the system. Guides are not By glucose & Oxygen supply (oxygen &glucose supply) ATP & ADP Inputs that regulate the system. Output of the system Matter-ATP, H2O,CO2 Energy- chemical potential, heat There are many possible “right” answers when using the guides correctly. Subsystems in this System Self Regulating (Negative) Producers Herbavoir Generally over time Matter- prey population Omnivoir Carnivore Self Reinforcing (Positive) Decomposers During short time periods Systems it is connected to. Biome Inputs that regulate the system. Energy-chemical Equilibrium: Food Web Static - Dynamic Carnivore population input = output? Seasons Predict the results of a change in the system. Migration of new carnivores into the area will change the balance of a carnivore population Output of the system Matter- Carnivore Population Energy- Chemical Terrariums with limited biodiversity may be used to model real food webs. These models are limited because they rarely include all the species in an actual environment. Subsystems in this System Self Regulating (Negative) Genes in the Gene pool If it does not improve reproductive potential Individual organisms Self Reinforcing (Positive) If it does improve reproductive potential Inputs that regulate the system. Matter-Proteins coded by the gene EnergyInformation-** genetic The guide itself is an imperfect model. Not every situation will fit neatly. Systems it is connected to. The Environment Predict the results of a change in the system. A changing environment will favor specific genes in the gene pool Equilibrium: Natural Selection of genetic variation Static or Dynamic input = output Output of the system Matter- Genes, Proteins Energy You will have to change and adapt the guide to make it fit specific scenarios.