Transcript Microbes!
Summary •Intro to microbes •what they are •where found •how affect humans Key Concepts •Definition of a microbe •Differences between beneficial and harmful microalgae •Balance vs imbalance •Patterns occur between organisms and their resources Procedure •Lead in discussion about algae •Game explanation (guided imagery) Procedure •Scene 1: Balance •Scene 2: Change •Scene 3: Beginning of Bloom •Scene 4: Imbalance Assessment •Performance •Reflection •Written Additional Resources Food Web Additional Resources (Dyhrman 2008) Additional Resources (Dyhrman 2008) Big Idea • Resource availability and abiotic factors affect algae growth • Variables that affect conditions for algae growth and development 4th and 5th Grade Objectives • To conceptualize and understanding of the different variables that affect microbial algae. • Investigate the counterintuitive nature of ocean temperature and algae growth. Summary • Students will analyze near real time data that reflects algae concentrations and conditions that might foster that development • Students will be able to predict algae development given a set of environmental conditions Sea Surface Temp July 2007 Chlorophyll Data July 2007 Introduce Upwelling • DEFINITION: Bring in cold nutrient rich water pushed by wind into warmer coastal areas, as opposed to nutrient run-off. (film on upwelling-WHOI) • VIDEO upwelling video Mississippi River Watershed Mississippi River Delta run-off Assessment • Predict if an algae bloom is likely given a series of conditions. • Using satellite pictures of different months (SST/Chlorophyll) as a group activity, students will decide if conditions are right for an algae bloom (stand up if yes, remain seated if no). • Give students individual satellite pictures to analyze in terms of conditions for blooms or situation possibilities. Standards • The Number of organisms an ecosystem can support depends on resources available and abiotic factors (National) • Most life in the ocean exists as microbes (ocean lit) • Ocean habitats are defined by environmental factors (ocean lit) • • • • • • • • • • • • Web Activities and Resources phytoplankton information Harmful Algae : Red Tide OceanLink | Biodviersity - Ask a Marine Scientist C-MORE | Center for Microbial Oceanography: Research and Education OceanColor Home Page C-MORE | Center for Microbial Oceanography algae blooms and phytoplankton Ask a Marine Scientist Harmful Algae : Red Tide WaterPollution (article on Gulf of Mexico) Microbe Personality Quiz planetquest.jpl.nasa.gov/AlienSafari Middle Grades Objectives • Students will have a basic understanding of marine microbes • Students will be able to describe some factors affecting populations of marine microbes • Students will be able to interpret data to draw conclusions about marine microbe populations • Students will be able to formulate predictions about future events Materials Internet access MS Excel (or similar graphing software) Selection of Variables to Graph More Choices for Graphing Example of Data Extraction using Chlorophyll a Creating an Excel Graph from Tabular Data season # Spring Summer Fall Winter n # 18 20 13 17 mean mg/m2 28.307 29.359 26.727 26.286 StdDev mg/m2 3.317 5.32 3.881 2.899 StdErr mg/m2 0.782 1.189 1.076 0.703 Chlorophyll (mean in mg/m2) 30 29.5 Number of Samples Recorded 29 28.5 28 27.5 27 26.5 26 25.5 25 24.5 Spring Summer Fall Winter HOT-DOGS Chlorophyll-a Graph Other Variables using HOT-DOGS graphs More Graphs!! Assessment • Participation in group assignment and whole-group discussion graded based on participation rubric • Graph accuracy based on rubric • Clear justification of student conclusion in written summary And all the participants and organizers!!