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STEM : ‘wet’ student’s appetite!

Your students might grab a glass of water to drink, turn the tap on to brush their teeth, take a shower at night, and fill their dog’s water bowl—all without even thinking about water quality. As an educator, you want to teach them about where their water comes from and why it’s important to keep natural water sources (such as rivers, lakes, and oceans) clean. Pollution can take many forms, and it’s often hard to know how clean a water...