forked from Khan/khan-exercises
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multiplication_1.html
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/
multiplication_1.html
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<!DOCTYPE html>
<html data-require="math graphie graphie-helpers-arithmetic word-problems">
<head>
<meta charset="UTF-8" />
<title>Multiplication 1</title>
<script src="../khan-exercise.js"></script>
</head>
<body>
<div class="exercise">
<div class="vars">
<var id="A">randRange( 1, 10 )</var>
<var id="B">randRange( 0, 10 )</var>
</div>
<div class="problems">
<div>
<div class="graphie" id="numbers">
init({
range: [ [ -1, 12], [ -3, B + 1 ] ],
scale: [ 50, 50 ]
});
KhanUtil.currentGraph.labelHolder = label( [ 0, B ],
"\\Huge{\\color{#6495ED}{ <var>A</var> } \\times \\color{#28AE7B}{ <var>B</var> } = {?}}", "right" );
</div>
<div class="solution"><var>A * B</var></div>
</div>
</div>
<div class="hints">
<div data-if="B > 0" data-unwrap>
<div>
<div class="graphie" data-update="numbers">
label( [ 0, B - 1 ], "\\text{Draw " + plural( A, "circle" ) + ".}", "right" );
drawRow( A, B - 3, "#6495ED", 1 );
</div>
</div>
<div>
<div class="graphie" data-update="numbers">
label( [ 0, B - 2 ], "\\text{"
+ "If there" + ( B === 1 ? " is " : " are " ) + plural( B, "row" )
+ " with " + plural( A, "circle" ) + ( B === 1 ? " " : " each " ) + ", there is a total of how many circles?"
+ "}", "right" );
for ( var i = 1; i < B; i++ ) {
drawRow( A, B - 3 - i, "#28AE7B", A * i + 1 );
}
</div>
</div>
</div>
<div data-else>
<div class="graphie" data-update="numbers">
label( [ 0, B - 1 ], "\\large{\\text{Multiplying any number by 0 equals 0.}}", "right" );
</div>
</div>
<div class="graphie" data-update="numbers">
KhanUtil.currentGraph.labelHolder.remove();
label( [ 0, B ],
"\\Huge{\\color{#6495ED}{" + A + "} \\times \\color{#28AE7B}{" + B + "} = " + ( A * B ) + "}", "right" );
</div>
</div>
</div>
</body>
</html>