Teach Students to Dig for Understanding Using an Unexpected Technological Shovel

Fuente: ERIC Institute of Education Sciences

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Dettagli Bibliografici
Autore principale:	Lake, Susan E. L.
Natura:	Recurso educativo Open Access
Lingua:	en
Pubblicazione:	2004
Soggetti:	Genealogy Internet Information Sources Web Sites History Instruction
Accesso online:	Acceder al recurso
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_version_	1867181573128847360
author	Lake, Susan E. L.
author_facet	Lake, Susan E. L. Lake, Susan E. L.
collection	Education Resources Information Center
contents	Teach Students to Dig for Understanding Using an Unexpected Technological Shovel Lake, Susan E. L. Genealogy Internet Information Sources Web Sites History Instruction Online genealogy tools is an unexpected resource as these tools not only serve valuable for genealogy research, but also can be used by students to learn about their country's past and learn to use primary materials to draw conclusions. Some of these Online sources like the 1880 census available at www.ancestry.com, www.thepastwhispers.com, which is a letter describing the Battle of Seven Pines and many others are presented.
format	Recurso educativo Open Access
id	eric_EJ717659
institution	ERIC Institute of Education Sciences
language	en
publishDate	2004
record_format	eric
spellingShingle	Teach Students to Dig for Understanding Using an Unexpected Technological Shovel Lake, Susan E. L. Genealogy Internet Information Sources Web Sites History Instruction Teach Students to Dig for Understanding Using an Unexpected Technological Shovel Lake, Susan E. L. Genealogy Internet Information Sources Web Sites History Instruction Online genealogy tools is an unexpected resource as these tools not only serve valuable for genealogy research, but also can be used by students to learn about their country's past and learn to use primary materials to draw conclusions. Some of these Online sources like the 1880 census available at www.ancestry.com, www.thepastwhispers.com, which is a letter describing the Battle of Seven Pines and many others are presented.
title	Teach Students to Dig for Understanding Using an Unexpected Technological Shovel
topic	Genealogy Internet Information Sources Web Sites History Instruction
url	https://eric.ed.gov/?id=EJ717659

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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