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adding_negative_numbers.html
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/
adding_negative_numbers.html
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<!DOCTYPE html>
<html data-require="math graphie graphie-helpers"><head>
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
<title>Adding negative numbers</title>
<script src="../khan-exercise.js"></script>
</head>
<body>
<div class="exercise">
<div class="vars">
<var id="A">randRange( -10, 10 )</var>
<var id="B">randRange( -10, -1 )</var>
</div>
<div class="problems">
<div id="PLUS">
<div class="vars">
<var id="ANSWER">A + B</var>
<var id="PADDING">ceil( ( 10 - ANSWER + A ) / 2)</var>
<var id="START">A - PADDING</var>
<var id="END">ANSWER + PADDING</var>
<var id="REMOVE">[]</var>
</div>
<div class="question">
<div class="graphie" id="numbers">
init({
range: [ [0, 13], [-4, 1] ]
});
label( [0, 0],
"\\Huge{\\color{#6495ED}{" + A + "} + \\color{#28AE7B}{(" + B + ")} = {?}}",
"right" );
</div>
</div>
<div data-forms="integer" class="solution"><var>ANSWER</var></div>
<div class="hints">
<div data-update="numbers" class="graphie">
REMOVE = label( [0, -2],
"\\Huge{\\color{#6495ED}{" + A + "} \\color{#28AE7B}{" + B + "} = {?}}",
"right" );
</div>
<div data-update="numbers" class="graphie">
numberLine( START, END, 1, 1, -3 );
circle( [ 1 + A - START, -3 ], 5/40, { stroke: "none", fill: "#6495ed" } );
</div>
<div data-update="numbers" class="graphie">
style({
stroke: "#28AE7B",
arrows: "->"
}, function(){
path( [ [ 1 + A - START, -3 ], [ 1 + ANSWER - START, -3] ] );
});
</div>
<div data-update="numbers" class="graphie">
circle( [ 1 + ANSWER - START, -3 ], 5/40, { stroke: "none", fill: "#FF00AF" } );
</div>
<div data-update="numbers" class="graphie">
REMOVE.remove();
label( [0, -2],
"\\Huge{\\color{#6495ED}{" + A + "} \\color{#28AE7B}{" + B + "} = "
+ "\\color{#FF00AF}{" + ANSWER + "}}",
"right" );
</div>
</div>
</div>
</div>
</div>
</body></html>