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5/2/16: We are having difficult-to-diagnose database issues (because of peak season usage) and have turned off much of the site to try to isolate the problem. Currently only the "Subject/Category" and "Grade level" lists are available. If these stay up, we will gradually turn other parts of the site back on. We apologize for the difficulty this causes in this busy curriculum-trading season.

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  • Time4Learning offers an interactive, homeschool science curriculum as part of its online curriculum. Elementary and middle school science lessons include: life science, physical science, and earth science. High school science offers courses in biology, chemistry, physics, and more. 14-day money-back guarantee. No contracts. View homeschool curriculum.

    Science4Us is a complete, web-based elementary science curriculum that teaches science using a fun, interactive approach. The kindergarten, first grade science and second grade science curricula uses virtual manipulatives mixed with offline science experiments and science projects to provide a comprehensive learning experience. Only $7.95/month. Try it today!

    Science: General

    Most homeschoolers are honest, but your comfort with the seller should be proportional to the payment you are sending. Study their reputation and length of registration (on their page), then communicate as needed. Check for common scams and banned users before sending money or merchandise. Click the membername in the listing to see the person's complete list of sale and wanted items and their contact information. Postage is additional, unless price is followed by "ppd" (postage paid to US). Register here in less than 30 seconds to list "Wanted" and "For sale" items for free. Condition descriptions are New, Nice, Good, Fair, and Worn (narrowly defined here, with some listing abbreviations). If condition is critical, confirm it before purchase.

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    Usborne Book of Science Activities Vol 2, Grs. K-5 -- $7 ppd. Good. wear on bottom binding, inside good, no writing.   kurriculumkorner  04/12
    Usborne Book of Science Activities vol 3, Grs. K-5 -- $9 ppd. Nice. batteries/body/weather- safe and easy to do at home.   kurriculumkorner  04/12
    Usborne Book of Science Activities vol. 2, Grs. K-5 -- $7 ppd. Good. Used in Sonlight Science K.   ISBN 074600978x   sdelcharco  04/20
    Usborne Books set, Gr. 2 -- $35 ppd. Nice.   [more] jbgb3  03/31
    Usborne Conservation Guide: Protecting Rivers, Grs. K-5 -- $3. Nice. and Seas. 24 p pb no writing.   luke15:10  04/18
    Usborne Discovery Internet-Linked Sharks, Grs. K-8 -- $5. New. 64 p pb Lknew Sharks of all sizes, free photo downloads & info.   luke15:10  04/18
    Usborne Electricity and Magnetism -- $7 ppd. Nice. Like new. .   ISBN 9780794522179   ezgrace  04/20
    Usborne Encyclopedia of Planet Earth, Grs. 6-8 -- $11 ppd. Nice. Comprehensive intro to physical geography, originally $21.95.   ISBN 0746034059   squirrel  03/28
    Usborne Everyday Things, Grs. K-5 -- $7 ppd. Nice. hb, no writing, how things work- simple explanations.   kurriculumkorner  04/12
    Usborne Explainers: Finding Out About...series, Grs. K-5 -- $2. Nice. 3 Lk new Chick-fil-A series 24 p pb books $2 ea-List of Titles:.   [more] luke15:10  04/18
    Usborne Finding Out About Everyday Things, Grs. K-5 -- $6 ppd. Good. hb, explains how everyday things work, great pictures.   kurriculumkorner  04/12
    Usborne Finding Out About Everyday Things, Grs. K-5 -- $7 ppd. Nice.   toolinhishands  04/18
    Usborne First Book of Nature, Grs. K-5 -- $12 ppd. Nice.   motherdear111  03/30
    Usborne First Encyclopedia of Science, Grs. K-8 -- $10 ppd. New. Internet -Linked.   bjdmwill  03/12
    Usborne First Encyclopedia of Science, Grs. K-8 -- $8 ppd. Nice. Internet Linked.   ISBN 0439560594   afthfuljrney  04/12
    Usborne First Encyclopedia of Seas & Oceans, Grs. 6-8 -- $10 ppd. Nice. It is the Internet-linked book in like new condition. .   coolmom2  04/07
    Usborne First Encyclopedia of Seas & Oceans, Grs. K-8 -- $4. Nice. pb. see shipping policy. .   ISBN 0794501117   bnbacademy  04/27
    Usborne First Encyclopedia of Space, Grs. K-5 -- $8 ppd. Nice. Soft cover, Internet-linked. .   ISBN 0794528058   chrisdubya  04/28
    Usborne First Encyclopedia of: ($7 each), Grs. K-5 -- $7 ppd. Good. Science; Our World; or Space * $7 ea or $18ppd for all three.   saved1112  04/27
    Usborne First Encyclopedias - Set of 4, Grs. K-5 -- $8. Nice. Our World, Animals, Space, Seas & Oceans.   pkcindy  03/20
    Usborne First Guide to the Universe, Grs. K-5 -- $8 ppd. Nice. earth/spaceflight/sun, moon, planets-simple text, great illus.   kurriculumkorner  04/12
    Usborne First Nature: Birds, Grs. K-5 -- $3. Nice. 24 p pb with lots of illustrations, fun games & puzzles.   luke15:10  04/18
    Usborne First Pets: Dogs and Puppies, Grs. K-5 -- $3. Nice. 32 p pb with Internet Links No writing Puppy care, training. . . .   luke15:10  04/20
    Usborne First Travelers: Deserts -- $3. Nice. 32 p pb. No writing, name inside.   luke15:10  04/20
    Usborne Illustrated Dictionary of Science, Grs. 6-12 -- $10. New. c2001.   ISBN 9780794500641   4hmajt  03/16
    Usborne Illustrated Encyclopedia, Grs. K-8 -- $12 ppd. Nice. The nTural world, hb, no writing, tight binding.   kurriculumkorner  04/26
    Usborne Internet Linked Animal World, Grs. K-8 -- $8 ppd. Nice. pb, Library of Sci, leopard on cover.   kurriculumkorner  04/26
    Usborne Internet Linked Complete book of the -- $7 ppd. New. Microscope Paperback c2002.   ISBN 0794501079   mamatothree  04/18
    Usborne Internet Linked Space, Grs. K-5 -- $5 ppd. Nice. Scholastic pub, old sticker mark on back cover.   kurriculumkorner  04/12
    Usborne Internet-Linked Complete...Human Body, Grs. K-8 -- $8 ppd. Nice. c. 2003 . . . Book of the. . . ''Sci F'' sticker on the spine.   ISBN 9780794506285   sdelcharco  04/11
    Usborne Library of Science Human Body (c 2001), Grs. K-8 -- $8 ppd. Nice. internet-linked.   ISBN 9780794500818   sjstenzel  04/18
    Usborne Living World Encyclopedia, Gr. 2 -- $7 ppd. Nice. This book has beautiful illustrations!.   ISBN 9780746030516   hartlandmama  04/28
    Usborne Living World Encyclopedia, Grs. K-8 -- $10 ppd. Nice. pb, beautiful pictures, ladybug on cover, no writing.   kurriculumkorner  04/12
    Usborne Mysteries & Marvels ofthe Animal World, Grs. K-5 -- $3. Nice. 32 p pb by Karen Goaman & Heather Amery. No writing-name erased.   luke15:10  04/20
    Usborne Rocks and Fossils, Grs. 6-12 -- $10 ppd. New.   coolmom2  04/07
    Usborne Science & Experiments: Planet Earth, Grs. K-5 -- $3. Nice. 48 p pb by Fiona Watt. A practical introduction with projects & .   luke15:10  04/20
    Usborne Science Activities, Grs. K-5 -- $8. Nice. Volumes 1 & 3, used in Sonlight Curriculum, c. 1992 & 1993.   kerryehb  03/16
    Usborne Science Activities set of 2, Grs. K-5 -- $6 ppd. Nice. Sci w/Light& Mirrors & Sci w/Magnets, pb, no writing, no wear.   kurriculumkorner  04/12
    Usborne Science Activities, Vols. 2 and 3, Grs. K-5 -- $10 ppd. Nice. Great used condition hardbacks. .   klh3241  04/30
    Usborne Science Experiments, Grs. 6-8 -- $6 ppd. Nice. ''hands-on'' science, > 100 experiments, basic .   [more] kurriculumkorner  04/12
    Usborne Science in the Kitchen -- $5 ppd. Nice. Color illustrations. Includes experiments to do in the kitchen. .   kurriculumkorner  04/14
    Usborne Science With Air -- $5 ppd. Nice. Color illustrations. Nice condition. .   kurriculumkorner  04/14
    Usborne Science With Water -- $3 ppd. Nice. Usborne Science Activities series.   ISBN 0746012616   peavey  04/05
    Usborne Starting Point Science, Grs. K-5 -- $7 ppd. Nice.   toolinhishands  04/18
    Usborne Starting Point Science, Grs. K-5 -- $15. Nice. Volumes 1, 3, & 4 Used in Sonlight Curriculum.   kerryehb  03/16
    Usborne Starting Point Science series: 3 books, Grs. K-5 -- $3. Nice. Choice of three books pb $3 or hb $4. List of titles:.   [more] luke15:10  04/18
    Usborne Starting Point Science Volume 1, Gr. K5 -- $4. Good. Great place to start science from Kindergarten and up. .   ISBN 9780794516260   [more] djmissy26  03/15
    Usborne Starting Pt Science-What's Under Sea?, Grs. K-5 -- $4 ppd. Nice. small pb, no writing, minimal wear.   kurriculumkorner  04/12
    Usborne Talkabout Bks-Then & Now / Day & Night, Grs. K-5 -- $3. Nice. 24 p pb $3 ea: Then & Now or Day & Night (X-libr./card pkt).   luke15:10  04/20
    Usborne The Big Book of Experiments, Grs. K-8 -- $8 ppd. New.   gateacher1230  03/16
    Usborne The Book of Science, Grs. 6-12 -- $12 ppd. Nice. Good background intro to physics, biology & chemistry. .   jacmac45fr  04/25
    Usborne The Great Dinosaur Search, Grs. K-5 -- $3. Good. 32 p XL pb by Rosie Heywood. No writing, slight wear-Dino types.   luke15:10  04/18
    Usborne The World of the Microscope, Grs. K-8 -- $5 ppd. Nice. intro bk w/ proj. & activ, c89, exc resource, pics, explanations.   kurriculumkorner  04/12
    Usborne The Young Astronomer, Grs. K-8 -- $6 ppd. Nice. Light wear, older version.   jezzxlou  04/30
    Usborne The Young Naturalist -- $7 ppd. Nice.   wermany9  04/27
    Usborne Understanding Your Body -- $15 ppd. Nice. excellent intro to the human body.   kurriculumkorner  04/12
    Usborne Understanding Your Brain, Grs. 6-8 -- $7 ppd. New. goes with Sonlight Science F.   ISBN 9780794508531   meyersales  04/23
    Usborne What's Science All About?, Grs. 6-8 -- $14 ppd. New. goe with Sonlight's 6th grade science.   ISBN 9780794521202   meyersales  04/23
    Usborne Why do People Eat, Grs. K-8 -- $4 ppd. New.   ISBN 9780794516239   acs_wb  04/21
    Usborne Wild Places -- $8 ppd. Nice. Covers mountains, jungles, and deserts. Color illustrations. .   kurriculumkorner  04/14
    Usborne Wild Places -- $10 ppd. New.   goodlife  04/05
    Usborne Wild Places, Mountains , Jungles -- $8 ppd. Nice.   dands  04/05
    Vancleave's ''Oceans for Every Kid'', Grs. 6-12 -- $7 ppd. Good. Book covered in clear vinyl; some staining on back pages. .   kjmast  03/30
    Virtual Reality (includes 3-D glasses), Grs. K-8 -- $3. Nice. 91 p pb Introd. & developments in electronics & Virtual Reality.   luke15:10  04/18
    Volcanoes & Earthquakes q&a's book, Grs. K-8 -- $3. Nice. Title: Why Do Volcanoes Blow Their Tops? 48 p. pb no writing.   luke15:10  04/18
    Volcanoes and Earthquakes- P. Lauber, Grs. 6-8 -- $2. Nice. 76 p pb. No writing/damage. Lots of B& W photos & illustrations.   luke15:10  04/18
    Watching Nature: A Beginner's Field, Grs. K-8 -- $12 ppd. New. Wonderful book for inquiring little minds!.   ISBN 0806995157   nesie5  04/04
    Water: The Power, Promise, and Turmoil, Grs. 6-12 -- $2. Nice. of N. America's Fresh Waters - Nat'l Geog. Special Ed. -120 p s.   luke15:10  04/18
    Way Cool Bugs DVD , Grs. 6-12 -- $5 ppd. Nice. In like new condition. .   coolmom2  04/07
    Way Things Work by Macaulay , Grs. K-5 -- $10 ppd. Nice. Hardcover book c1988, Houghton Mifflin Co.   ISBN 0395428572   kns  04/16
    Weather , Grs. 6-8 -- $5 ppd. New.   coolmom2  04/07
    Weather & the Bible , Grs. K-8 -- $6 ppd. Nice. pb, no writing, D DeYoung, c 92/print02, 100 Q& A.   kurriculumkorner  04/12
    Weather Tracker Activity Guide 2004, Grs. K-8 -- $4 ppd. Nice. Learning Resources LER 2145; no writing, very little wear. pb. .   susie_r  04/26
    Weather: Why It Storms, Rains, Snows.., Grs. K-5 -- $2. Nice. . . or Shines. 24 p Chic-Fil-A pb includes hands-on project.   luke15:10  04/18
    Wetlands by Pam Hickman Nature Study, Grs. K-8 -- $8 ppd.
          Nice. Investigating swamps, bogs, fens, and marshes. .   ISBN 9781550741261  
          [more] myhomeschooldelights  04/01
    Whales, Dolphins and Porpoises of the, Grs. K-8 -- $3. Nice. Pacific (Ocean). Shorelines of Amer. series-48 p xl pb wphotos!.   luke15:10  04/18
    What is Creation Science? , Grs. 9-12 -- $7 ppd. Good. by Henry M Morris & Gary E Parker.   ISBN 0890510814   sballmom  03/23
    What Really Happened to the Dinosaurs?, Grs. K-8 -- $10 ppd. New.   ISBN 0890511594   caree  04/03
    What's Smaller Than a Pygmy Shrew?, Grs. K-5 -- $4. New. Wells of Knowledge Science used in Sonlight Pre-K Sci.   ISBN 9780807588383   baf185  04/23
    Where the Waters Run - Moody Science, Grs. K-12 -- $4 ppd. Nice. Classics VHS.   toolinhishands  04/18
    White Shark Outside the Cage DVD, Grs. 6-12 -- $8 ppd. Nice. As seen on National Geographic. In like new condition. .   coolmom2  04/07
    Wild Days: Creating Discovery Journals -- $3 ppd. Nice. c1998 a how-to for nature study journals.   ISBN 1576360733   lindalee12  03/26
    Wild Goose Science Books set (5) or ea, Grs. K-8 -- $15 ppd. Nice. 5 titles cover earth, life, & phys. science. $4/each, $15/5 .   [more] susie_r  04/26
    Wild, Wild World, A Question & Answer -- $2. Nice. Curious young readers can find the answers to their questions.   [more] barbara_in_nh  04/19
    Wildflowers of North America - Golden, Grs. 6-12 -- $8 ppd. Good. To nice 340 p. pb, guide to field identification, unmarked.   ISBN 0307136647   statman7  03/31
    Windowsill Science Centers , Grs. K-5 -- $7 ppd. Nice. K-3, no writing, make your windowsill into a lab, By Kepler.   kurriculumkorner  04/12
    Winter Promise , Grs. K-5 -- $50. Good. Hoot & Chirp, Buzz & Bite.   [more] housemouse  04/14
    Winter Promise/Animals and Their World, Grs. K-5 -- $40 ppd. Nice.   [more] stiner8  04/02
    Wonders of Creation- Weather Book -- $10 ppd. New. By Michael Oard.   ISBN 0890512116   4education  04/16
    Woolly Mammoth in Trouble , Grs. K-5 -- $3. Nice. 28 p pb + 4-pg poster in back Smithsonian's Prehistoric Pals bk.   luke15:10  04/28
    World's Last Great Places:NorthAmerica, Grs. K-12 -- $8 ppd. New. National Geo DVD covers Everglades and Yellowstone, 112 min. .   ISBN 9781426292743   sballmom  03/23
    Worms East Our Garbage , Grs. 6-8 -- $24 ppd. Nice. Classroom Activities for a Better Environment.   ISBN 9780977804504   shawnah  04/10
    You Asked? Over 300 Great Questions & -- $3. Nice. Astounding Answers. Divided into chapters about the ins & outs.   [more] barbara_in_nh  05/02
    Young Scientist- Pyramids , Grs. K-8 -- $7 ppd. Nice. hands on- projects using everyday supplies, by Mellett.   kurriculumkorner  04/12
    Your Guide to the Sky - Rick Shaffer, Grs. 6-12 -- $6 ppd. Nice. ''An ideal introduction to amateur astronomy. ''.   kjmast  03/30
    Zoobooks: (5) fun nature magazines, Grs. K-8 -- $2. Nice. $2 ea. Choose from: Eagles, Lions, Pandas, Penguins, or Sharks.   luke15:10  04/28

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