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### Making number talks matter

A number talk is a brief daily practice where students mentally solve computation problems and talk about their strategies. The talks help students to work flexibly with numbers and arithmetic properties, building a solid foundation and confident disposition for future learning.

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# Measurement

Paul Lockhart

‘I will never hold a circle in my hand, but I can hold one in my mind. And I can measure it.’

Measurement is a book to be read and relished. The author explores complex mathematical ideas about shape and motion and renders them intuitive and graspable. In the first section, the conversation begins at regular polygons and finishes with mechanical curves, taking in symmetry, area, volume, trigonometry and conic sections on the way. The second section ventures into coordinate systems, dimension, vectors, velocity and differential calculus. Lockhart writes clearly, imaginatively and inspirationally, with sound explanations and illuminating diagrams. You will love it!

From the author of A Mathematician’s Lament.

You can hear Paul Lockhart speak on The World of Mathematical Reality http://www.youtube.com/watch?v=V1gT2f3Fe44

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ISBN-13: 978-0-674-05755-5
Year Levels: 7 - 12
Publisher: The Belknap Press of Harvard University Press
Page Count: 408
Cover type: Soft cover
Publication date: 2012
Product number: ECA016
Keywords: Secondary, General/Geometry, Teacher education