There's no problem with importing. The states and Europe prohibit importing but not exporting so they won't give grief either. There are some streams nearby. There are lakes also but the lakes have croccidiles by the shores and thus are not safe to walk beside. What kind of science projects do you have in mind? I have all kinds of TOPS books for hands-on science but they are all far too advanced for my kids. Simple, lower-grammar-school projects would be great.

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Mary Vanderkooi
Kale Heywott Church (KHC)
Soddo, Ethiopia