Welcome to Webinar! 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. Use arrow to open and close full control panel Other helpful tips Use the question window if you need assistance The webinar will begin shortly. You may not hear any audio until the webinar begins. You will not need a microphone. Raise your hand 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

Students Struggle with the Short Answer Questions 2007 Lifting a Load 2008 How that Plant Got There Juan de Fuca Energy inputs and outputs % 2011 – Source of matter in a living system = 34%

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 models Input Output Matter Energy Positive Feedback Negative Feedback Static Equilibrium Dynamic Equilibrium Model Limits Changes

High School Systems Feedback Systems within systems Model limits Predict model limits Page 22 Test & Item Specs

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. 54% 38% Lessons Learned: Many students think soil is the major source of matter and/ or energy for a plant Where did that plant come from? Understanding the input of matter

Open for Questions? About Systems

Subsystems in this System Mitochondria Cytoplasm (oxygen &glucose supply) ATP & ADP Self Regulating (Negative) By glucose & Oxygen supply Self Reinforcing (Positive) Inputs that regulate the system. Matter-Glucose, O 2 Energy- chemical Systems it is connected to. Circulatory in humans Equilibrium: Static or Dynamic- input = output –yes Predict the results of a change in the system. Lack of glucose or oxygen in the cytoplasm triggers increase movement across the cell membrane. Output of the system Matter-ATP, H 2 O,CO 2 Energy- chemical potential, heat Cellular Respiration Guides are not “Fill in the Blanks” they are graphic organizers to guide discussions. There are many possible “right” answers when using the guides correctly.

Subsystems in this System Producers Herbavoir Omnivoir Carnivore Decomposers Self Regulating (Negative) Generally over time Self Reinforcing (Positive) During short time periods Inputs that regulate the system. Matter- prey population Energy-chemical Systems it is connected to. Biome Seasons Equilibrium: Static - Dynamic input = output? 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 Food Web Carnivore population 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 Genes in the Gene pool Individual organisms Self Regulating (Negative) If it does not improve reproductive potential Self Reinforcing (Positive) If it does improve reproductive potential Inputs that regulate the system. Matter-Proteins coded by the gene Energy- Information-** genetic Systems it is connected to. The Environment Equilibrium: Static or Dynamic input = output Predict the results of a change in the system. A changing environment will favor specific genes in the gene pool Output of the system Matter- Genes, Proteins Energy Natural Selection of genetic variation The guide itself is an imperfect model. Not every situation will fit neatly. You will have to change and adapt the guide to make it fit specific scenarios.