<TestItem CLASS="FR" METHOD="keyinput">
<Stem>
	<Paragraph><Sentence>Extend the following sequence by giving the next 
        two terms: 
          <Inlineimg SRC="images/ExtendArithmetic3cStem.gif" ALTTEXT="" />
          <Emphasis>. . .</Emphasis> </Sentence> 
        </Paragraph>
</Stem>
<input_collection>
	<inputfield   ID="1" type="inline" size="shortest">Enter your answers 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">13/2</observable>
		<observable ID="2" TYPE="math">91/12</observable>    
        <feedback TYPE="Student">Right! You correctly generated the next two terms in the arithmetic sequence.</feedback>
        <feedback TYPE="Teacher">The student got this item correct.</feedback>
    </response>
    <response  SCORE="0" EVIDENCEVAL="0">
        <observable ANY="true"/>
        <feedback TYPE="Student">Sorry, that's incorrect. The sequence given in the problem, 13/12, 13/6, 13/4, 13/3, 65/12,... is an arithmetic sequence. In this case, there is a common difference of 13/12 between terms. To get any term, add 13/12 to the previous term.</feedback>
        <feedback TYPE="Teacher">The student got this item incorrect.</feedback>
    </response>
</key>	
<Metadata>
    <AeL ItemNode="tExtendArithmetic3c" Difficulty="3">
        <PMNode LINK="true">ExtendArithmetic</PMNode>
    </AeL>
</Metadata>

</TestItem>
