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See inside the blocks.  On the next lab page (2.3.3) there is a discussion of several different correct solutions to these.&#xD;&#xD;We&apos;ve learned that students find this exercise difficult.  This may be one of the places where a whole-class discussion would be useful.  &quot;If a&lt;b, is a≤b true?  What if a=b?  What if a&gt;b?&quot;</comment></custom-block></script><script x="20" y="443.4999999999999"><custom-block s="%s ≥ %s"><l></l><l></l></custom-block></script><script x="20" y="476.4999999999999"><custom-block s="%s ≠ %s"><l></l><l></l></custom-block></script><script x="20" y="544.4999999999999"><custom-block s="%b implies %b"><l/><l/><comment w="105.33333333333333" collapsed="true">if P then Q. TFTT</comment></custom-block></script><script x="20" y="579.4999999999999"><custom-block s="%b xor %b"><l/><l/><comment w="117.33333333333333" collapsed="true">exclusive OR. FTTF</comment></custom-block></script><script x="336" y="12.666666666666714"><block s="receiveGo"></block><block s="clear"></block><block s="down"></block><block s="setSize"><l>3</l></block><block s="doForever"><script><block s="doIfElse"><block s="reportGreaterThan"><block s="yPosition"></block><l>40</l></block><script><block s="setColor"><color>255,35,24,1</color></block></script><script><block s="doIfElse"><custom-block s="is %s between %s and %s ?"><block s="yPosition"></block><l>-50</l><l>40</l><comment w="53.333333333333336" collapsed="true">2.4</comment></custom-block><script><block s="setColor"><color>12,0,241,1</color></block></script><script><block s="setColor"><color>146,0,95,1</color></block></script></block></script></block><block s="doIfElse"><block s="reportMouseDown"><comment w="53.333333333333336" collapsed="true">1.3</comment></block><script><block s="down"></block></script><script><block s="up"></block></script></block><block s="doGotoObject"><l><option>mouse-pointer</option></l></block></script><comment w="75.33333333333333" collapsed="true">2.3.1.2</comment></block></script></scripts></sprite></sprites></stage><hidden></hidden><headers></headers><code></code><blocks><block-definition s="%&apos;a&apos; ≤ %&apos;b&apos;" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"></input></inputs><script><block s="doReport"><block s="reportOr"><block s="reportLessThan"><block var="a"/><block var="b"/></block><block s="reportEquals"><block var="a"/><block var="b"/></block></block></block></script></block-definition><block-definition s="%&apos;a&apos; ≥ %&apos;b&apos;" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"></input></inputs><script><block s="doReport"><block s="reportOr"><block s="reportGreaterThan"><block var="a"/><block var="b"/></block><block s="reportEquals"><block var="a"/><block var="b"/></block></block></block></script></block-definition><block-definition s="%&apos;a&apos; ≠ %&apos;b&apos;" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"></input></inputs><script><block s="doReport"><block s="reportNot"><block s="reportEquals"><block var="a"/><block var="b"/></block></block></block></script></block-definition><block-definition s="is %&apos;mid&apos; between %&apos;low&apos; and %&apos;high&apos; ?" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"></input><input type="%s"></input></inputs><script><block s="doReport"><block s="reportAnd"><custom-block s="%s ≥ %s"><block var="mid"/><block var="low"/></custom-block><custom-block s="%s ≤ %s"><block var="mid"/><block var="high"/></custom-block></block></block></script><scripts><comment x="14.666666666666666" y="88.8" w="304.6666666666667" collapsed="false">As the lab says, it&apos;s okay to use &quot;&gt;&quot; and &quot;&lt;&quot; instead of &quot;≥&quot; and &quot;≤.&quot;</comment></scripts></block-definition><block-definition s="%&apos;p&apos; implies %&apos;q&apos;" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%b"></input><input type="%b"></input></inputs><script><block s="doReport"><block s="reportOr"><block s="reportNot"><block var="p"/></block><block var="q"/></block></block></script></block-definition><block-definition s="%&apos;p&apos; xor %&apos;q&apos;" type="predicate" category="operators"><header></header><code></code><translations></translations><inputs><input type="%b"></input><input type="%b"></input></inputs><script><block s="doReport"><block s="reportAnd"><block s="reportOr"><block var="p"/><block var="q"/></block><block s="reportNot"><block s="reportAnd"><block var="p"/><block var="q"/></block></block></block></block></script></block-definition></blocks><variables></variables></project><media name="U2L3pp1-2-Predicates Template" app="Snap! 6, https://snap.berkeley.edu" version="1"></media></snapdata>