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</html><description>Ayer 24 de marzo se celebr&#xF3; la segunda jornada del programa de 4&#xBA; ESO + Empresa de la Comunidad de Madrid en el ICMAT. 30 estudiantes de 26 centros educativos de la comunidad han sido recibidos en el centro, con el objetivo de mostrarles de primera mano el trabajo que se desarrolla en un instituto de investigaci&#xF3;n de matem&#xE1;ticas. Hoy, 25 de marzo, empieza la tercera y &#xFA;ltima jornada, pero antes, recordamos el d&#xED;a de ayer. Erat&#xF3;stenes prob&#xF3;, en el siglo III a. C., que la longitud de la Tierra era aproximadamente 39.000 km (seg&#xFA;n el valor que estimemos del&#x2026;</description><thumbnail_url>http://www.madrimasd.org/blogs/matematicas/files/2015/03/IMG_5327-300x200.jpg</thumbnail_url></oembed>
