Supports National Science Education Standards (NSES): 5-8:Unifying Concepts and Processes Standards:Evidence, models, and explanation
Supports National Science Education Standards (NSES): 5-8:Content Standard A Science as Inquiry Standards:Abilities necessary to do scientific inquiry
Supports National Science Education Standards (NSES): 5-8:Content Standard C Life Science Standards:Population and ecosystems
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AbstractIn this classroom activity students culture algal mats on microscope slides. They observe how snails can be used to control this growth and limit further expansion of the algae. They will also observe how snails themselves can act as pest species by feeding upon desired aquarium plants. This activity page will offer students experience in growing and culturing a film of algae, observing the grazing behavior of pond snails, and evaluating the effectiveness of snails as a biological control. Educational levels: Middle school
TypeLearning materials:Lab activity
Copyright/LicenseCopyright 1990-2003 The Chedd-Angier Production Company, Inc. All rights reserved. Each SCIENTIFIC AMERICAN FRONTIERS program is accompanied by an online teaching guide filled with science activities and educators are encouraged to download and photocopy these materials for use in the classroom.
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PALS - Performance Assessment Links in Science1999-01PALS is an on-line, standards-based, continually updated resource bank of science performance assessment tasks indexed via the National Science Education Standards (NSES) and various other standards frameworks. The tasks, collected from numerous sources, include student directions and response forms, administration procedures, scoring rubrics, examples of student work, and technical quality data calculated from field testing. On-line rater training packets have also been created for some tasks. PALS is supported by a grant from the Elementary, Secondary, and Informal Education (ESIE) Division (Grant #: ESI-9730651) of the National Science Foundation. Educational levels: High school, Intermediate elementary, Middle school, Primary elementary
NASA Earth Observatory: Biomes (title provided or enhanced by cataloger)This National Aeronautics and Space Administration (NASA) website allows students to investigate biomes and then test their knowledge by completing missions. The site provides basic data about each biome such as temperature, precipitation, vegetation, location, description and links. Biomes discussed include coniferous forest, temperate deciduous forest, desert, grassland, rainforest, shrubland and tundra. The two missions (available at beginner and advanced levels) are designed to teach students about the relationship between temperature and precipitation and plants in biomes. A teacher resource guide provides details about goals, expected outcomes, extension ideas, and hands-on activities. Educational levels: High school, Intermediate elementary, Middle school, Primary elementary
Earth Update ActivitiesCarolyn Sumners; Patricia Reiff (2000-01-01)This site provides earth science student activities in PDF format, organized by grade level and national science and math objectives. Most of the activities use the data or images from Earth Update (available on the web or using the "Earth Update" CD-Rom). Activities include both inquiry-based and guided data exploration. Educational levels: High school, Intermediate elementary, Middle school, Undergraduate lower division