Category Archive for: Experimental Design

#35 – A 2-Step Approach to Hypothesis Writing

How do you teach students to write a good scientific hypothesis? Many teachers use “If, then” statements to teach this important science skill. But, at the end of the day, do they really know how to write or identify a good scientific hypothesis? According to results from a recent REAL Science Challenge contest, many students…

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#34 – Identify Independent and Dependent Variables Using these 3 Tips (note: they’re things science teachers take for granted)

As science teachers, we probably  do an awesome job teaching the concept of independent vs. dependent variables to students. But, how many students can actually identify those variables in a lab? Or when given some experimental data? From the results of REAL Science Challenge Volume 2 Contest 3, approximately 50% of participants struggle to identify…

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#26 – Getting Big on Instagram (and other inquiry questions for variables practice)

Are you looking for an activity for students to practice identifying independent and dependent variables? Most independent and dependent variables practice activities tend to provide a statement and have students identify the independent and dependent variables. A typical practice question goes like this: The problem with Typical Questions Typical practice questions are fine if you…

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#25 – How we make a great movie (and teach Independent and Dependent variables too!)

What’s one thing science students should be able to do in grade 8 and 9? I think they should be able to identify and differentiate between independent and dependent variables. However, many gr 8 and 9 science students struggle with this skill. Results from REAL Science Challenge contests show that over 40% of contest writers…

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#2 – Why we use film canisters to teach scientific method (and why you should too)

What do we tend to focus on when we teach scientific method? Part of “doing” science is to come up with models that describe invisible phenomena. Bohr, Rutherford, and Thomson developed models of the atom. Watson and Crick developed the double-helix model of deoxyribonucleic acid (DNA). However, when we teach scientific method, we don’t always…

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