var MB20 = 
	{ 
	title: "Unit Circle Board", 
	items: [ { name: "Unit Circle Board", item_num: "MB20", price: "9.95", weight: 0.86 } ],
	attr: [ 
			{ name: "Price", value: '$ 9.95' },
			{ name: "Item #", value: "MB20" },
			{ name: "Size", value: "11"x16&quot" },
			{ name: "Line Color", value: "Yellow" }
		  ],
	images: [ { name: "unit.gif", width: 208, height: 145, 
				desc: "Unit Circle Board", lg_name: "unit_lg.gif" } ],
	description: 
"<P>Once your kids begin learning algebra and trigonometry, they will " +
"encounter the concept of the Unit Circle.  This 11&quot;x16&quot; board " +
"makes those lessons a breeze, since it provides a perfect circle every " +
"time!  Give your kids a head start on calculus by helping them to grasp " +
"the fundamentals of trig.</P>" +
"<P>The ten concentric circles show tenths of the unit circle. They make it " +
"easy for kids to find the approximate values for various trigonometric " +
"functions.  The radial lines divide the circle in to 30° increments.  Dots " +
"around the unit circle subdivide the circle further into 15° increments.</P>" +
"<P>You can use this board with children of any age to teach fractions, " +
"similar to the <A href=\"#MB9\">Fraction Graph Board</A>.</P>" 
  	};