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diff --git a/backup/moodle1/lib.php b/backup/moodle1/lib.php
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+++ b/backup/moodle1/lib.php
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+<?php
+
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * @package    qtype
+ * @subpackage algebra
+ * @copyright  2011 David Mudrak <david@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Multichoice question type conversion handler
+ */
+class moodle1_qtype_algebra_handler extends moodle1_qtype_handler {
+
+    /**
+     * @return array
+     */
+    public function get_question_subpaths() {
+        return array(
+            'ANSWERS/ANSWER',
+            'ALGEBRA',
+            'ALGEBRA/VARLIST/VARIABLE'
+        );
+    }
+
+    /**
+     * Appends the algebra specific information to the question
+     */
+    public function process_question(array $data, array $raw) {
+        // convert and write the answers first
+        if (isset($data['answers'])) {
+            $this->write_answers($data['answers'], $this->pluginname);
+        }
+		
+        // convert and write the algebra variables
+        if (isset($data['algebra'][0]['varlist']['variable'])) {
+            $variables   = $data['algebra'][0]['varlist']['variable'];
+        } else {
+            $variables   = array();
+        }
+		$this->xmlwriter->begin_tag('algebra_variables');
+        foreach ($variables as $variable) {
+            $this->xmlwriter->begin_tag('algebra_variable', array('id' => $this->converter->get_nextid()));
+            $this->xmlwriter->full_tag('name', $variable['name']);
+            $this->xmlwriter->full_tag('min', $variable['min']);
+			$this->xmlwriter->full_tag('max', $variable['max']);
+            $this->xmlwriter->end_tag('algebra_variable');
+        }
+        $this->xmlwriter->end_tag('algebra_variables');
+		
+		// and finally the algebra options
+		$options = $data['algebra'][0];
+		$this->xmlwriter->begin_tag('algebra', array('id' => $this->converter->get_nextid()));
+		$this->xmlwriter->full_tag('compareby', $options['compareby']);
+		$this->xmlwriter->full_tag('nchecks', $options['nchecks']);
+		$this->xmlwriter->full_tag('tolerance', $options['tolerance']);
+		$this->xmlwriter->full_tag('disallow', $options['disallow']);
+		$this->xmlwriter->full_tag('allowedfuncs', $options['allowedfuncs']);
+		$this->xmlwriter->full_tag('answerprefix', $options['answerprefix']);
+		$this->xmlwriter->end_tag('algebra');
+    }
+}