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How-To & Techniques

  • Boosting Cell Phone Speakers Inspire your students with a design challenge that encourages them to think outside the box. In this hands-on activity, student teams compete to produce the best sound booster for a smartphone or MP3 player using everyday items. Includes background information and complete instructions for teacher and students. View »
  • Measuring pH: Indicators, Paper, and Meters Many activities require pH testing, including chemistry titrations, environmental science water quality testing, and biological processes labs. This article covers tools and techniques. View »
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