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Wie die alten Griechen die moderne Mathematik formten - http://www.dravenstales.ch/wie-die-alten-griechen-die-moderne-mathematik-formten/

Great trick for teaching how to make 10. Students use a highlighter to find the "10" and then circle the other number with a crayon. Brilliant!

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Hundred Frame: a virtual math manipulative similar to Twenty Frame. Add counters to the hundred square in ones or tens and the digits change. Use it to work with addition or subtraction. Also available as a 69p iOS app: Hundreds Frame.

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von Kids Activities Blog

Science for Kids: Make a Balance

MATH COMMON CORE: Measurement (K.MD.1,2)

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