 You Already Use Metric  Jim Loy
Cases where the metric system is already in use in the United States.
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 Young Engineers  The Decade Group
Enrichment courses for children and teenagers using LEGO and K'nex. Sessions such as Big Builders, LEGO Challenge, and GaliLEGO teach basic and complex mathematics, introduce famous scientists, and demonstrate powers and principles of physics. Based in
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 Young Investor  Columbia Management
Information on investing and investments, along with games and puzzles related to investing. Sections for teachers, parents, and students in grades K12.
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 Youth Accounts  FORUM Credit Union
Financial literacy games, stories, activities, articles, calculators, videos, and other resources  each set to a musical soundtrack  for learning about finance. Children aged 27 learn with Flip and Flop the frogs; eight to twelve yearolds, with
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 yyGrams Books: Books, Games, Puzzles  David Zethmayr
Zethmayr presents boundary mathematics to young children, introducing the ideas of logic, proof, and algebra far earlier than is usually attempted. Books, games, and puzzles on this site reinforce these ideas, and Zethmayr presents a seminar and children's
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 Zap Headquarters  Sue and Bob Durante
Sue and Bob Durante offer a wide variety of Math Programs for school assemblies, math nights, workshops and more. Blending magic with Math and teaching many bits of magical fun that use math and will get students to use math outside of the classroom.
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 Zapple Educational Consulting  Ray Appel
Free stuff: math resources, links and math movies in the style of the Mac/PC ads that teach us about math. Great for teachers for math discussion and older students. Also: workshops and other educational consulting services. Descriptions and testimonials
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 Zeno
School and community programs that "reframe math as fun and relevant" through games and other activities. See, in particular, the freely downloadable PDFs for lesson plans of math games such as 10 Pin Limbo, Twinks, and Farkle. Based in Seattle, this
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 Zeno's Paradox  Jim Loy
Among the most famous of Zeno's "paradoxes" involves Achilles and the tortoise, who are going to run a race. Achilles, being confident of victory, gives the tortoise a head start. Zeno supposedly proves that Achilles can never overtake the tortoise. A
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 Zimaths  University of Zimbabwe
An electronic maths magazine with clever, amusing articles written to supplement the resources available to Zimbabwean students, most of whom do not have access to extrasyllabus information. Features include: How number plates and ISBNs work; Statistical
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 Zoltan Dienes' Web Site  Zoltan Dienes
"Math through play" from a developer of psychomathematics, multibase blocks, and the sixstage theory of learning mathematics. Freely download PDFs of Dienes' Ruritania stories and math games such as Strip Mathematics, Circular Villages, Six Stages with
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 Zombie Cat  Diego Fonstad
Zombie Cat shares learning catalysts  those "perfect stories, explanations, or methods to teach complex mathematical and scientific concepts." Insightful math learning catalysts date back to January, 2011, with categories such as "Videos worth watching"
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 Zome System  Zometool, Inc.
Available in kits of various sizes, Zometool is a 31zone design tool and educational toy for kids, hobbyists, students, teachers and researchers. Precisionmolded in ABS plastic, Zometool models spatial structures representing hyperspaces of up to 31
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 Zooba Island  Vrilliance Solutions
Free Flash games for children aged 7 to 12 which "inject fun and excitement into learning mathematics." Developed in consultation with Singapore's Ministry of Education Curriculum Planning Department around the Singapore mathematics curriculum, games
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 ZooWhiz  EdAlive
A curriculumlinked learning system for parents and teachers of children ages 515. Sample fun, colorful learning activities for math, word skills, and reading before registering a free "keeper" account or purchasing a premium "zoologist" subscription.
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