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1. Verfasser:	Daniel Feldman
Format:	Artículo científico
Sprache:	es
Veröffentlicht:	Centro de Estudos Educação e Sociedade 2004
Schlagworte:	Educación Currículum Enseñanza escolar Historia de la escuela
Online-Zugang:	https://www.redalyc.org/articulo.oa?id=87313718006
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Imágenes en la historia de la enseñanza: la lámina escolar Daniel Feldman Educación Currículum Enseñanza escolar Historia de la escuela El trabajo propone algunas reflexiones sobre el papel de las imágenes en la historia de la enseñanza escolar. Se procura analizar esta cuestión entrelazando dos puntos de vista. En primer lugar, algunas respuestas que fueron provistas, principalmente durante el siglo XIX e inicios del siglo XX, a la pregunta ¿qué papel juega la representación del mundo, de las cosas, en el conocimiento y cómo la pedagogía creyó que debe proceder la enseñanza escolar para promover el conocimiento? En segundo lugar, la descripción de algunos rasgos que describen la evolución del uso de imágenes en las escuelas públicas argentinas. Los dos puntos de vista se vinculan para analizar los cambios en el uso de la imagen figurativa y fija en la práctica escolar. Se propone que el cambio principal está ligado con el paso en el uso de las imágenes como base de conocimiento mediante la intuición sensible, al uso de las imágenes como apoyo informativo, recurso de organización o expresión del trabajo de los alumnos. Se utiliza esta reflexión sobre el cambio en el uso de las imágenes escolares para considerarlo como caso de una hipótesis de orden más general sobre el desarrollo del currículum y de los patrones de formación en Argentina. 2004 artículo científico 0101-7330 https://www.redalyc.org/articulo.oa?id=87313718006 es http://www.redalyc.org/revista.oa?id=873 Educação & Sociedade application/pdf Centro de Estudos Educação e Sociedade Educação & Sociedade (Brasil) Num.86 Vol.25

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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