Interactivate: Clock Arithmetic

( ! ) Warning: Invalid argument supplied for foreach() in /var/www/html/interactivate/app/fetch/InterModule.php5 on line 93
Call Stack
#	Time	Memory	Function	Location
1	0.0009	185632	{main}( )	../activity.php5:0
2	0.9598	24182816	LocalPageRender2->renderPrint( )	../activity.php5:267
3	0.9606	24188368	PageRender2->renderPrint( )	../LocalPageRender2.php5:50
4	0.9620	24198944	PageRender2->render( )	../PageRender2.php5:614
5	0.9654	24206912	SLayout->layout( )	../PageRender2.php5:530
6	0.9700	24348312	SShodorLayout->msBuild( )	../SLayout.php5:56
7	0.9700	24348312	InteractivateLayout->layoutContentWell( )	../SShodorLayout.php5:46
8	0.9700	24348312	InteractivateLayout->layoutInteractivateTabs( )	../InteractivateLayout.php5:9
9	0.9700	24348312	InteractivateLayout->buildMainContent( )	../InteractivateLayout.php5:21
10	0.9700	24350048	InteractivateLayout->layoutAppletTabTemplate( )	../InteractivateLayout.php5:88
11	0.9701	24350672	InterModule->__construct( )	../InteractivateLayout.php5:172
12	0.9701	24350816	InterActivity->load( )	../InterModule.php5:18
13	0.9701	24351128	InterModule::getShortnames( )	../InterActivity.php5:18

( ! ) Warning: Invalid argument supplied for foreach() in /var/www/html/interactivate/app/fetch/InterModule.php5 on line 93

Call Stack

Time

Memory

Function

Location

0.0009

185632

{main}( )

../activity.php5:0

0.9598

24182816

LocalPageRender2->renderPrint( )

../activity.php5:267

0.9606

24188368

PageRender2->renderPrint( )

../LocalPageRender2.php5:50

0.9620

24198944

PageRender2->render( )

../PageRender2.php5:614

0.9654

24206912

SLayout->layout( )

../PageRender2.php5:530

0.9700

24348312

SShodorLayout->msBuild( )

../SLayout.php5:56

0.9700

24348312

InteractivateLayout->layoutContentWell( )

../SShodorLayout.php5:46

0.9700

24348312

InteractivateLayout->layoutInteractivateTabs( )

../InteractivateLayout.php5:9

0.9700

24348312

InteractivateLayout->buildMainContent( )

../InteractivateLayout.php5:21

0.9700

24350048

InteractivateLayout->layoutAppletTabTemplate( )

../InteractivateLayout.php5:88

0.9701

24350672

InterModule->__construct( )

../InteractivateLayout.php5:172

0.9701

24350816

InterActivity->load( )

../InterModule.php5:18

0.9701

24351128

InterModule::getShortnames( )

../InterActivity.php5:18

( ! ) Warning: Invalid argument supplied for foreach() in /var/www/html/interactivate/app/fetch/InterModule.php5 on line 93
Call Stack
#	Time	Memory	Function	Location
1	0.0009	185632	{main}( )	../activity.php5:0
2	0.9598	24182816	LocalPageRender2->renderPrint( )	../activity.php5:267
3	0.9606	24188368	PageRender2->renderPrint( )	../LocalPageRender2.php5:50
4	0.9620	24198944	PageRender2->render( )	../PageRender2.php5:614
5	0.9654	24206912	SLayout->layout( )	../PageRender2.php5:530
6	0.9700	24348312	SShodorLayout->msBuild( )	../SLayout.php5:56
7	0.9700	24348312	InteractivateLayout->layoutContentWell( )	../SShodorLayout.php5:46
8	0.9700	24348312	InteractivateLayout->layoutInteractivateTabs( )	../InteractivateLayout.php5:9
9	0.9700	24348312	InteractivateLayout->buildMainContent( )	../InteractivateLayout.php5:21
10	0.9700	24350048	InteractivateLayout->layoutAppletTabTemplate( )	../InteractivateLayout.php5:88
11	0.9701	24350672	InterModule->__construct( )	../InteractivateLayout.php5:172
12	0.9701	24350816	InterActivity->load( )	../InterModule.php5:18
13	0.9714	24396160	InterModule::smartRedirect( )	../InterActivity.php5:20
14	0.9720	24450192	tryRedirect( )	../InterModule.php5:108
15	0.9771	24551824	suggestShortname( )	../redirect.php5:18
16	0.9771	24552080	InterModule::getShortnames( )	../redirect.php5:82

( ! ) Warning: Invalid argument supplied for foreach() in /var/www/html/interactivate/app/fetch/InterModule.php5 on line 93

Call Stack

Time

Memory

Function

Location

0.0009

185632

{main}( )

../activity.php5:0

0.9598

24182816

LocalPageRender2->renderPrint( )

../activity.php5:267

0.9606

24188368

PageRender2->renderPrint( )

../LocalPageRender2.php5:50

0.9620

24198944

PageRender2->render( )

../PageRender2.php5:614

0.9654

24206912

SLayout->layout( )

../PageRender2.php5:530

0.9700

24348312

SShodorLayout->msBuild( )

../SLayout.php5:56

0.9700

24348312

InteractivateLayout->layoutContentWell( )

../SShodorLayout.php5:46

0.9700

24348312

InteractivateLayout->layoutInteractivateTabs( )

../InteractivateLayout.php5:9

0.9700

24348312

InteractivateLayout->buildMainContent( )

../InteractivateLayout.php5:21

0.9700

24350048

InteractivateLayout->layoutAppletTabTemplate( )

../InteractivateLayout.php5:88

0.9701

24350672

InterModule->__construct( )

../InteractivateLayout.php5:172

0.9701

24350816

InterActivity->load( )

../InterModule.php5:18

0.9714

24396160

InterModule::smartRedirect( )

../InterActivity.php5:20

0.9720

24450192

tryRedirect( )

../InterModule.php5:108

0.9771

24551824

suggestShortname( )

../redirect.php5:18

0.9771

24552080

InterModule::getShortnames( )

../redirect.php5:82

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/interactivate/app/fetch/InterModule.php5:93) in /var/www/html/common-2.3/pr2/PageRender2.php5 on line 616
Call Stack
#	Time	Memory	Function	Location
1	0.0009	185632	{main}( )	../activity.php5:0
2	0.9598	24182816	LocalPageRender2->renderPrint( )	../activity.php5:267
3	0.9606	24188368	PageRender2->renderPrint( )	../LocalPageRender2.php5:50
4	0.9800	24576880	header ( )	../PageRender2.php5:616

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/interactivate/app/fetch/InterModule.php5:93) in /var/www/html/common-2.3/pr2/PageRender2.php5 on line 616

Call Stack

Time

Memory

Function

Location

0.0009

185632

{main}( )

../activity.php5:0

0.9598

24182816

LocalPageRender2->renderPrint( )

../activity.php5:267

0.9606

24188368

PageRender2->renderPrint( )

../LocalPageRender2.php5:50

0.9800

24576880

header ( )

../PageRender2.php5:616

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Interactivate: Clock Arithmetic

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<: <On a mission to transform learning through computational thinking, Shodor is dedicated to the reform and improvement of mathematics and science education through student enrichment, faculty enhancement, and interactive curriculum development at all levels. Student development of numerical models and simulations integrated with core curriculum provides an opportunity to gain practical experience in computational science. Additionally, the National Computational Science Institute (NCSI) provides nation-wide workshops portraying resources and instructional ideas to middle school, high school, and undergraduate instructors for use in the classroom. Resources and materials offered to these instructors are available free of charge from Shodor's website and are largely developed by Shodor student interns. Shodor's academic program efficiently guides participants from excitement to experience to expertise through computational explorations, research opportunities, and service.We're sorry!We have detected JavaScript as being disabled in your browser.

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Printing Instructions
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The output of the activities in Shodor's Interactivate are created dynamically by computer languages such as JavaScript. As a result, the pictures on the screen are not something that your browser can easily print. These instructions should enable you and your students to print out results from your explorations, to annotate them, and to make them part of any assessment.

Instruction for Windows Users

Please make sure that the image that you wish to print is visible on the screen.
Hit the "Print Screen" key on your keyboard. (This copies an image of your screen onto your computer's clipboard)
Open a writing or drawing program (such as Microsoft Word or "Paint")
- Paint can be found at: · All Programs · Accessories · Paint
"Paste" the image from the clipboard into the application (Edit · Paste).
If you're using "Paint": you can use the "crop" tool to keep only the part of the image you wish. To use the crop tool: select the part of the image you wish to keep, then select the "Cut" option from the file menu and open up a new window and select the "Paste" option.
Now you may print the file using File · Print.

Instruction for Mac OS Users

Press the following keys at the same time.
Command (aka. the flower/Apple key) · Shift · 4
You will notice that your mouse cursor becomes a cross-hair. Using the cross-hair, create a rectangular box around the image you wish to caputure, then release the mouse. If you make a mistake, while still pressing down on the mouse key, hit the ESC key.
A file will be created on your desktop called "Picture Y", where "Y" represents a number.
You can open this file in Preview and print from this program as normal.

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