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Musical plane

Designed and produced by the Spanish CoI

The c-book unit «Musical Plane» was designed by five members of the Spanish CoI, from Math Secondary school teachers, researchers in Maths Education, to a musician.

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The horizon

Designed and produced by the Spanish CoI

The c-book unit «The Horizon» was designed by five members of the Spanish CoI. This c-book unit is devoted to the study of the vision of the horizon. Some geometric and algebraic basic concepts provide the necessary tools to understand how the height of the point of vision and of the object one tries to see and the radius act on the vision. Furthermore, refraction makes possible to see things beyond the horizon (under the line of vision).

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Areas and algebraic expressions

Designed and produced by the Spanish CoI

The c-book unit «Areas and algebraic expressions» was designed by four members of the Spanish CoI. This c-book unit is devoted let students build and work with some algebraic notions, using elements like the circle and square to represent equivalences among geometrical, pre-algebraic and algebraic expressions. This c-book unit is structured in two parts:

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Algebraic expressions

Designed and produced by the French CoI

Six Coi-members were involved in the design of this c-book, coming from a variety of disciplinary and professional domains: researchers in mathematics education, mathematics teacher educators, mathematics teachers, and developers of digital tools for mathematics teaching and learning.

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