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"Tessellations here mean designs featuring animals, birds, etc, which can fill the page, without gaps or over-lapping, to form a pattern that completely fills a space. It's the simplest kind of jigsaw puzzle: all the pieces look alike! You can see example tessellations in the top right corner of this website. The example changes each time you move to a new page. On these pages, you will find information about all aspects of tessellations, from their history and development to complete galleries of examples by school students, guest artists, the webmasters Seth and David, and of course M. C. Escher, the pioneer of the art. Also included are extensive workshops showing how to design and produce your own. All are accessible from the orange navigation bar or from the site index -see below. This site is a dedicated graphics site and not focused on the math. As M. C. Escher said, "Mathematicians go to the garden gate but they never venture through to appreciate the delights within." To use another metaphor, you're missing the fun if you use a microscope to enjoy a merry-go-round. If, as a result of your visit, you venture through that garden gate, please send us your designs for inclusion in the guest gallery. Link to us! To put a button that links to us on your website, if you're comfortable with HTML then just copy the text below, change the text to suit your feelings, and add it to your website."

"You never know what will come in handy for a craft project or fill a need around the house. Besides, recycling stuff is better than adding to the landfills and it's good for our environment! Here are some ideas for things you can use all that old stuff for. Everyday household stuff... Frisbie Bird Feeded Walkway Party Lantern Things you can do with Breyer's ice cream containers. Things you can do with old film cannisters. Things you can do with berry baskets Things you can do with old CD's Things you can do with old CD jewel cases Things you can do with old plastic pop bottles Things you can do with old cardboard tubes Things you can make with tin foil How to make lamps & vases from glass bottles Things you can do with old cardboard milk cartons Things you can do with wire hangers Things you can do with old egg cartons Things you can do with old garden hoses Things you can do with old newspaper How to make your own recycled paper How to preserve newspaper clippings Things you can do with old baby food jars Things you can make with wallpaper Things you can do with tuna cans Using Stuff In Nature Things you can make with walnut shells Things you can make with pine cones Things you can make with sea shells Recycle kitchen/cooking waste MORE Recycling Ideas... (Miscellaneous stuff - Light bulbs, brown paper bags, bleach bottles ...)"

great site for many things of interest

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"Welcome to the latest edition of the Native Plants Database. From this page you can explore the wealth of native plants in North America. Use the options below to search for 7,153 native plants by scientific or common name or choose a particular family of plants. If you are not sure what you are looking for, try the combination search or our Recommended Species lists. If you are looking for non-native or introduced species, we suggest you visit the USDA Plants Database. "

zone maps for plant hardiness, events, education, statistics

"This form accesses 133,074 images of plants. A variety of organizations and individuals have contributed photographs to CalPhotos. Please be aware that these various contributors maintain copyright and follow the usage guidelines provided with each image."