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Bibliographic Details
Format:	Recurso educativo Open Access
Language:	en
Published:	1975
Subjects:	Curriculum Development Curriculum Guides Elementary Education Elementary School Science Instruction Instructional Materials Program Guides Science Activities Science Education Teaching Guides
Online Access:	https://eric.ed.gov/?id=ED118418
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_version_	1867181384905261056
collection	Education Resources Information Center
contents	Teaching Science in the Elementary School. Bulletin No. 276. Curriculum Development Curriculum Guides Elementary Education Elementary School Science Instruction Instructional Materials Program Guides Science Activities Science Education Teaching Guides This publication provides guidelines for the operation of an elementary school (K-6) science program curriculum. The report describes the science program which was developed and is in operation in the Montgomery County Public School District (Rockville, Maryland). An emphasis of the program is to maintain continuity between all levels of the school science curriculum. To provide this, an overview of the entire science program is presented, along with sections listing instructional activities, science materials, textbooks, and equipment for each of the three two-year "frameworks" which make up the total program. Appendices list annotated library titles under appropriate content areas as well as library resource books, textbooks, pamphlets, and teacher's guides which are most helpful to instructors in the program. (CP)
format	Recurso educativo Open Access
id	eric_ED118418
institution	ERIC Institute of Education Sciences
language	en
publishDate	1975
record_format	eric
spellingShingle	Teaching Science in the Elementary School. Bulletin No. 276. Curriculum Development Curriculum Guides Elementary Education Elementary School Science Instruction Instructional Materials Program Guides Science Activities Science Education Teaching Guides Teaching Science in the Elementary School. Bulletin No. 276. Curriculum Development Curriculum Guides Elementary Education Elementary School Science Instruction Instructional Materials Program Guides Science Activities Science Education Teaching Guides This publication provides guidelines for the operation of an elementary school (K-6) science program curriculum. The report describes the science program which was developed and is in operation in the Montgomery County Public School District (Rockville, Maryland). An emphasis of the program is to maintain continuity between all levels of the school science curriculum. To provide this, an overview of the entire science program is presented, along with sections listing instructional activities, science materials, textbooks, and equipment for each of the three two-year "frameworks" which make up the total program. Appendices list annotated library titles under appropriate content areas as well as library resource books, textbooks, pamphlets, and teacher's guides which are most helpful to instructors in the program. (CP)
title	Teaching Science in the Elementary School. Bulletin No. 276.
topic	Curriculum Development Curriculum Guides Elementary Education Elementary School Science Instruction Instructional Materials Program Guides Science Activities Science Education Teaching Guides
url	https://eric.ed.gov/?id=ED118418

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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