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App of the week - Number Line

Number Line is an educational game app to help students learn about fractions, decimals, and percents by ordering equivalent fractions, decimals, and percents on a number line.

The app features multiple levels where the player must drag circles with either a percent, decimal or fraction onto a number line in the correct sequence. A score is earned based on the time it takes to put all the circles in the correct order (faster is better), plus points for each correct placement, minus points for each error.

Recommended by @bgflnews.

BGfL will be featuring an app each week which can expand the teaching and learning experience. We want to provide guidance on the use of mobile apps and touch technology - so as well as the use of iPhone/iPad apps, we are keen to share Android apps available for you to use.

If you have an app you wish to recommend, then let us know.

Number Line - iTunes App of the Week on bgfl.org

14/11/2011

The following information is meant for the website developer for debugging purposes.

Error Occurred While Processing Request

Element ERROR is undefined in URL.

The error occurred in D:\Inetpub\wwwroot\bcc_portal\bgfl\custom\files_saved\templates\2561\comment_view.cfm: line 180

178 : 			<td>
179 : 			<!-- START Betsie replace [<p>For various technical reasons it has not been possible to offer a text-only version of this feature. We apologise for this - we are currently working to eliminate all such pages.</p><p>However, in the meantime, please click on the '<a href="##betsie_graphical">Graphic version of this page</a>' link at the bottom of this page to use the feature. You can return to the text-only version at any time.</p>] -->
180 : 			<table width="90%" border="0" cellpadding="5" cellspacing="0" class="templateFormBG<cfif URL.error>Error</cfif>">
181 : 			<cfif URL.error>
182 : 			  <tr>

Resources:

Check the ColdFusion documentation to verify that you are using the correct syntax.
Search the Knowledge Base to find a solution to your problem.

Browser	CCBot/2.0
Remote Address	50.16.132.180
Referrer
Date/Time	19-Jun-13 03:48 AM

Stack Trace

at cfcomment_view2ecfm376414015.runPage(D:\Inetpub\wwwroot\bcc_portal\bgfl\custom\files_saved\templates\2561\comment_view.cfm:180) at cfindex2ecfm1329941189.runPage(D:\Inetpub\wwwroot\bcc_portal\bgfl\index.cfm:227)

coldfusion.runtime.UndefinedElementException: Element ERROR is undefined in URL.
	at coldfusion.runtime.CfJspPage.resolveCanonicalName(CfJspPage.java:1061)
	at coldfusion.runtime.CfJspPage._resolve(CfJspPage.java:1038)
	at coldfusion.runtime.CfJspPage._resolveAndAutoscalarize(CfJspPage.java:1137)
	at cfcomment_view2ecfm376414015.runPage(D:\Inetpub\wwwroot\bcc_portal\bgfl\custom\files_saved\templates\2561\comment_view.cfm:180)
	at coldfusion.runtime.CfJspPage.invoke(CfJspPage.java:152)
	at coldfusion.tagext.lang.IncludeTag.doStartTag(IncludeTag.java:349)
	at coldfusion.runtime.CfJspPage._emptyTag(CfJspPage.java:1915)
	at cfindex2ecfm1329941189.runPage(D:\Inetpub\wwwroot\bcc_portal\bgfl\index.cfm:227)
	at coldfusion.runtime.CfJspPage.invoke(CfJspPage.java:152)
	at coldfusion.tagext.lang.IncludeTag.doStartTag(IncludeTag.java:349)
	at coldfusion.filter.CfincludeFilter.invoke(CfincludeFilter.java:65)
	at coldfusion.filter.ApplicationFilter.invoke(ApplicationFilter.java:225)
	at coldfusion.filter.RequestMonitorFilter.invoke(RequestMonitorFilter.java:51)
	at coldfusion.filter.PathFilter.invoke(PathFilter.java:86)
	at coldfusion.filter.ExceptionFilter.invoke(ExceptionFilter.java:69)
	at coldfusion.filter.ClientScopePersistenceFilter.invoke(ClientScopePersistenceFilter.java:28)
	at coldfusion.filter.BrowserFilter.invoke(BrowserFilter.java:38)
	at coldfusion.filter.GlobalsFilter.invoke(GlobalsFilter.java:38)
	at coldfusion.filter.DatasourceFilter.invoke(DatasourceFilter.java:22)
	at coldfusion.filter.RequestThrottleFilter.invoke(RequestThrottleFilter.java:115)
	at coldfusion.CfmServlet.service(CfmServlet.java:107)
	at coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:78)
	at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:91)
	at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
	at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:257)
	at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:541)
	at jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:204)
	at jrunx.scheduler.ThreadPool$DownstreamMetrics.invokeRunnable(ThreadPool.java:318)
	at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:426)
	at jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeRunnable(ThreadPool.java:264)
	at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)