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The difference in perceptions of big versus small biology persisted at the end of the Spring semester (change of −0.75 for ICB students vs. change of −0.10 for traditional students) and remained statistically significant (t = 2.44, df = 51, p < 0.01).
Students using ICB disagreed with this statement significantly more at the end of the Fall semester (change of −1.08) than students using a traditional textbook (change of −0.06, t = 3.46, df = 58, p < 0.001; Table 2).
As shown in Table 2, however, ICB students agreed with the statement less after the first semester (change of −0.32), while students using the traditional textbook agreed more (change of +0.22) after the semester, representing a significant difference in pre- to postsemester changes between the two groups (t = 2.37, df = 59, p < 0.05).
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If you've got a set work schedule, each semester change-over can get a little hectic when you've got to schedule new classes around it.
A similar pattern is seen for illogical statements, for which the full-semester implementations changed significantly (fewer illogical justifications postcourse than precourse) on three questions, while the partial-semester implementations changed on only one.
But next semester, that may change depending on how insurance companies change each of our own costs.
In another semester, we motivated change by relating heat flux to temperature differences using Newton cooling.
These changes in ratings were significantly different from each other (t = 6.78, df = 59, p < 0.001) and persisted through the end of the Spring semester (ICB students changed −1.27, while traditional students changed +0.23, t = 5.96, df = 51, p < 0.001).
In these cases, collecting data on students in semesters before a change in teaching approach and then on students in semesters after the change would balance ethical concerns with the need for experimental rigor, particularly if the assessment is done using published instruments.
My grade distributions changed semester by semester, as my students did.
I enrolled in calculus my second semester and also changed my study habits to include a more focused attitude on my academic subjects.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com