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Tagged With: dependent variable

What do I do with my data??

This time of year, most of the questions I get focus on how to graph the data collected. If you are trying to decide between a line graph and a bar graph… it usually is not your choice. The type of data and type of project dictate what, mathematically, you are “allowed” to do. Here … Continue reading »

Categories: Advice for students, How to.... | Tags: , , , , , , , | 17 Comments

Data Driven Science

Science is all about the data – so many scientists envision the data they are going to generate BEFORE they do experiments. . It is a good way of approaching a science fair project because you will know what you are going to do with your data even before you have it. Unfortunately, sometimes students … Continue reading »

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The KEY to designing your own science fair project is …

So you have to do a science fair project and there are plenty of websites that will give you detailed, step-by-step directions like a recipe for a cake – but, that’s not “real science”. If you have found your way to my website – I hope you are at least thinking about designing your own … Continue reading »

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How to graph data for your science fair project

Once you have your data, you will need to present it to your teacher and science fair judges. In a science publication, you would choose between a table and a graph, but for the science fair project it is acceptable, and even encouraged, to showcase the data in both forms. If you have to pick … Continue reading »

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Replicate! Replicate! Replicate!

The single biggest mistake in all the science fair projects I evaluated yesterday was no replication or incorrect replication, so today’s post is geared toward covering this specific topic. All science experiments MUST be replicated. That means you have to repeat everything you did, exactly the same way (to the best of your ability), a … Continue reading »

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How to make the Mentos-Soda explosion into a winning science fair project

So you really just want to make a mess and blow something up, but if you learn scientific method along the way, we’ll call it a win-win! First, check out the description of the reaction and photos from those that have tried it, here: Mentos Diet Coke Geyser at Steve Spangler Science via @SpanglerScience … Continue reading »

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New Year’s Resolution: Design your own science fair project!

Think about your favorite recipe, one you make the exact same way every time. Perhaps the recipe is for chocolate chip cookies, or banana bread, or apple pie. Now imagine you are partway through the recipe and realize you are missing one key ingredient, for example, milk or sugar. What would you do? I would … Continue reading »

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Pop Quiz #2: Quantitative Variables

Which of the following are QUANTITATIVE variables (and therefore would make good dependent variables)? Hint: For definitions on quantitative vs. qualitative and dependent vs. independent variables see the “words you need” page under the “getting started” tab above. Height Weight Color Temperature Volume Speed Age Race Gender Direction Time Frequency I’ll put the answers in … Continue reading »

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Pop Quiz #1

This is the first in a series of “pop quizzes” for science fair competitors to practice their skills. Think of them as “time trials” for cycling or “scrimmages” for soccer. Feel free to leave your answers in the comment box. Identify the dependent variable in each project idea. Project Idea #1: What is the effect … Continue reading »

Categories: Pop Quizzes | Tags: , , , | 3 Comments