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What’s the deal with the bead bracelets?

What’s the deal with the bead bracelets?. Observations? Did anyone do any testing? What variables in testing could be changed to make this an interesting experiment? Can we learn anything important from this?. How to ask a good question. Cause and effect (independent and dependent variable)

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What’s the deal with the bead bracelets?

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  1. What’s the deal with the bead bracelets? • Observations? • Did anyone do any testing? • What variables in testing could be changed to make this an interesting experiment? • Can we learn anything important from this?

  2. How to ask a good question • Cause and effect (independent and dependent variable) • Measureable effect • Qualitative (bad) • Which cleaner cleans glass best? • Moldy bread • Bacterial colonies from different surfaces • Quantitative (good) • Measure distance, weight, time, length, etc • Graphs, tables, charts • Including standard deviation error bars

  3. What makes a good experiment? • Interesting, Important, Organized, Valid, Repeatable • Independent variable • Cause • dependent variable • Effect • Change only one variable at a time • Controls/constants • Number of trials • Grade appropriate • Doable

  4. ASU handout with sci method, manipulative and observational experiments http://scene.asu.edu/habitat/s_method.html The Southwest Center for Education and the Natural Environment (SCENE)

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