<TestItem CLASS="FR" METHOD="keyinput">
<Stem>
	<Paragraph><Sentence>Find the missing terms in the geometric sequence below:</Sentence></Paragraph>
	<Paragraph><Sentence><Blockquote>2, __, 18, __, 162, <Emphasis> ... </Emphasis></Blockquote></Sentence></Paragraph>
</Stem>
<input_collection>
	<inputfield  ID="1" type="inline" size="shortest">Enter your answer here: </inputfield>
	<inputfield  ID="2" type="inline" size="shortest"> and </inputfield>
	
</input_collection>
<key TYPE="Compound">
    <response SCORE="1" EVIDENCEVAL="1">
		<observable ID="1" TYPE="Math">6</observable>
		<observable ID="2" TYPE="Math">54</observable>    
        <feedback TYPE="Student">Right!</feedback>
        <feedback TYPE="Teacher">The student correctly identified missing terms in a geometric sequence.</feedback>
    </response>
    <response SCORE="0" EVIDENCEVAL="0">
        <observable ID="1" TYPE="Math">6</observable>
        <observable ID="2" ANY = "true"/>
        <feedback TYPE="Student">Sorry, that's not quite right. You found the first missing term correctly, but you made an error finding the second missing term.</feedback>
        <feedback TYPE="Teacher">The student found the first missing term correctly, but made an error finding the second missing term.</feedback>
    </response>
<response SCORE="0" EVIDENCEVAL="0">
        <observable ID="1" ANY = "true"/>
        <observable ID="2" TYPE = "Math">54</observable>
        <feedback TYPE="Student">Sorry, that's not quite right. You found the second missing term correctly, but you made an error finding the first missing term.</feedback>
        <feedback TYPE="Teacher">The student found the second missing term correctly, but made an error finding the first missing term.</feedback>
    </response>
<response SCORE="0" EVIDENCEVAL="0">
        <observable ID="1" TYPE="Math">10</observable>
        <observable ID="2" ANY = "true"/>
        <feedback TYPE="Student">Sorry, that's incorrect. It looks like you may have tried to find a missing terms by taking the average of the terms on either side. This would work for an arithmetic sequence, but not a geometric sequence.</feedback>
        <feedback TYPE="Teacher">The student may have tried to find a missing term by averaging the terms on either side.</feedback>
    </response>
<response SCORE="0" EVIDENCEVAL="0">
        <observable ID="1" ANY = "true"/>
        <observable ID="2" TYPE="Math">90</observable>
        <feedback TYPE="Student">Sorry, that's incorrect. It looks like you may have tried to find a missing term by taking the average of the terms on either side. This would work for an arithmetic sequence, but not a geometric sequence.</feedback>
        <feedback TYPE="Teacher">The student may have tried to find a missing term by averaging the terms on either side.</feedback>
    </response>
    <response SCORE="0" EVIDENCEVAL="0">
        <observable ANY="true"/>
        <feedback TYPE="Student">Sorry, that was incorrect.</feedback>
        <feedback TYPE="Teacher">The student got this item incorrect.</feedback>
    </response>
</key>	
<Metadata>
    <AeL ItemNode="tExtendGeometric2c" Difficulty="2">
        <PMNode LINK="true">ExtendGeometric</PMNode>
    </AeL>
</Metadata>

</TestItem>
