What Is a Good Science Fair Project for Middle School Students?

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Examples of good projects for a middle school science fair include descriptive projects such as researched reports about global climate change, experimentation projects such as "What is the effect of caffeine on plant growth?" or engineering projects such as building a do-it-yourself hovercraft. Other projects include demonstration projects where a scientific principle is shown to the audience, but no new information is learned, and collection projects where a student shows his extensive collection of something such as bugs.