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Master Member
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問題點：一個初中的學生做的實驗 變因有沒有控制的好
去年五月的新聞
http://abcnews.go.com/blogs/technol...t-plant-growth/
引用:
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Horsevad said that some of the local debate over the experiment has been over whether the negative effects were due to the cress seeds drying from the heat emitted by the computer/WiFi routers used in the experiment. But she explained that the students kept the cress seeds in both groups sufficiently moist during the whole experiment, and the temperatures were controlled thermostatically.
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輔助的老師說他們有控制濕度 溫度
http://www.mnn.com/health/healthy-s...r-wi-fi-router#
引用:
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Teacher Kim Horsevad told the Daily Dot that her students did the test twice with the same results. She was quick to point out that while the students did the experiment to test only one variable to the best of their ability, it is a high school experiment and this isn’t a professional study…
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這篇說做了兩次實驗，結果一樣
他們已經盡到他們能做的程度把變因控制到只剩一個
看大陸網友找到他們的報告
http://www.dr.dk/NR/rdonlyres/07564...er24apr2013.pdf
我只能說這老師可能有問題
給新聞媒體的圖片，跟報告的圖差異太大了
除非圖片給的是第一次實驗，報告用的是第二次實驗； |