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      Design and Evaluation of the Environmental Outreach Activity for Middle School Students

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          Abstract

          The design and development of an outreach activity targeted at 6th grade middle school students, which aims to determine the level of phosphate in samples of water from nearby lakes and streams, are detailed. Several parameters were noted as key to the successful implementation of this activity in a school setting and to it being well-received by both students and teachers. These include the hands-on nature of the experiment, the use of professional scientific equipment and protocols, and the relevance to everyday life and nearby societal issues. Incorporation of the activity into the middle school science curriculum and educational standards are discussed. Qualitative data indicate that the outreach activity was positively received by students and teachers alike. Statistical differences were found between schools and gender even before performing the activity, suggesting that not all student audiences have the same predisposition for science. Overall, the outreach activity appeared to increase stronger endorsements of positive attitudes toward science. Cumulatively, these results suggest that the outreach activity was well-received and engaging and indicate that it increases positive attitudes toward science, though more in-depth and longitudinal analyses are necessary for future studies.

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          Most cited references40

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          National differences in gender-science stereotypes predict national sex differences in science and math achievement.

          About 70% of more than half a million Implicit Association Tests completed by citizens of 34 countries revealed expected implicit stereotypes associating science with males more than with females. We discovered that nation-level implicit stereotypes predicted nation-level sex differences in 8th-grade science and mathematics achievement. Self-reported stereotypes did not provide additional predictive validity of the achievement gap. We suggest that implicit stereotypes and sex differences in science participation and performance are mutually reinforcing, contributing to the persistent gender gap in science engagement.
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            Career choice. Planning early for careers in science.

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              Reducing Phosphorus to Curb Lake Eutrophication is a Success

              As human populations increase and land-use intensifies, toxic and unsightly nuisance blooms of algae are becoming larger and more frequent in freshwater lakes. In most cases, the blooms are predominantly blue-green algae (Cyanobacteria), which are favored by low ratios of nitrogen to phosphorus. In the past half century, aquatic scientists have devoted much effort to understanding the causes of such blooms and how they can be prevented or reduced. Here we review the evidence, finding that numerous long-term studies of lake ecosystems in Europe and North America show that controlling algal blooms and other symptoms of eutrophication depends on reducing inputs of a single nutrient: phosphorus. In contrast, small-scale experiments of short duration, where nutrients are added rather than removed, often give spurious and confusing results that bear little relevance to solving the problem of cyanobacteria blooms in lakes.
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                Author and article information

                Journal
                ACS Omega
                ACS Omega
                ao
                acsodf
                ACS Omega
                American Chemical Society
                2470-1343
                22 September 2020
                06 October 2020
                : 5
                : 39
                : 25175-25187
                Affiliations
                [§ ]Department of Chemistry, State University of New York Oswego , Oswego, New York 13126, United States
                []Department of Chemistry & Biochemistry, Benedictine College , Atchison, Kansas 66002, United States
                []Department of Chemistry, Bemidji State University , Bemidji, Minnesota, 56601, United States
                [# ]Bemidji Middle School , Bemidji, Minnesota 56601, United States
                []Department of Neurology, David Geffen School of Medicine at University of California Los Angeles , Los Angeles, California 90095, United States
                []Department of Psychology, Bemidji State University , Bemidji, Minnesota, 56601, United States
                []Department of Chemistry, University of Minnesota , Minneapolis, Minnesota, 55455, United States
                Author notes
                Article
                10.1021/acsomega.0c03194
                7542590
                5af55289-851e-4755-8b8f-26641d91907e

                This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.

                History
                : 02 July 2020
                : 09 September 2020
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                ao0c03194

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