https://open.pd4cs.org/sample-page/2014-08-25T18:10:36Zhttps://open.pd4cs.org/login-2/2014-07-15T11:08:22Zhttps://open.pd4cs.org/people/2014-07-17T13:00:34Zhttps://open.pd4cs.org/conditional-statements-videos-placeholder/2014-06-18T18:51:05Zhttps://open.pd4cs.org/conditional-statements-overview/2015-08-28T21:53:25Zhttps://open.pd4cs.org/conditional-statements-boolean-expressions/2015-08-28T21:49:19Zhttps://open.pd4cs.org/conditional-statements-simplifying-boolean-expressions/2015-08-28T21:43:39Zhttps://open.pd4cs.org/conditional-statements-short-circuit-evaluation/2015-08-28T21:55:23Zhttps://open.pd4cs.org/conditional-statements-additional-concepts/2015-08-28T21:38:53Zhttps://open.pd4cs.org/variables-in-scratch/2015-02-08T16:24:00Zhttps://open.pd4cs.org/variables-python/2015-02-08T16:24:12Zhttps://open.pd4cs.org/variables-misconception-variables-used-in-programs-work-like-variables-in-math/2015-05-06T21:00:58Zhttps://open.pd4cs.org/variables-misconception-when-assigning-the-value-of-one-variable-to-another-students-may-invert-the-order-is-it-ab-or-ba/2015-08-28T22:06:13Zhttps://open.pd4cs.org/variables-misconception-assignment-a-b-1-changes-the-value-of-b-by-1-as-well-as-changing-a/2015-08-28T22:06:56Zhttps://open.pd4cs.org/variables-misconception-if-variables-are-like-a-box-why-cant-they-hold-more-than-one-value-at-the-same-time/2015-05-06T20:39:20Zhttps://open.pd4cs.org/variables-misconception-assigning-one-variables-value-to-another-links-the-variables-so-changing-one-changes-the-other/2015-08-28T22:07:18Zhttps://open.pd4cs.org/variables-misconception-assignment-statements-like-a-b-1-are-stored-as-a-formula-rather-than-as-a-value/2015-08-28T22:07:36Zhttps://open.pd4cs.org/variables-misconception-the-left-hand-side-of-assignment-statement-does-not-always-need-to-be-variable/2014-08-23T18:35:09Zhttps://open.pd4cs.org/variables-misconception-students-think-computers-have-intelligence-and-so-know-what-value-should-be-associated-with-a-variable-name-like-largest/2015-08-28T22:07:53Zhttps://open.pd4cs.org/loops-an-overview/2016-01-31T17:20:33Zhttps://open.pd4cs.org/loops-in-scratch-2/2015-05-26T15:48:33Zhttps://open.pd4cs.org/program-1-a-ball-moves-a-fixed-number-of-times/2015-08-28T23:14:21Zhttps://open.pd4cs.org/program-2-the-ball-moves-until-it-reaches-the-end-of-the-stage/2015-08-28T23:14:49Zhttps://open.pd4cs.org/program-3-a-light-bulb-goes-on-and-off/2015-08-28T23:15:25Zhttps://open.pd4cs.org/programs-4-and-5-a-ball-rolls-back-and-forth-forever/2015-08-28T23:16:34Zhttps://open.pd4cs.org/program-6-using-nested-loops-for-the-moving-circle/2015-08-28T23:17:44Zhttps://open.pd4cs.org/student-misconceptions-about-variables/2015-03-30T18:08:31Zhttps://open.pd4cs.org/conditionals-conditional-statements/2015-08-29T00:44:11Zhttps://open.pd4cs.org/loops-python/2016-01-31T17:24:29Zhttps://open.pd4cs.org/for-loops-in-python/2016-01-31T17:29:03Zhttps://open.pd4cs.org/example-1-why-do-we-need-loops/2016-02-12T17:55:05Zhttps://open.pd4cs.org/example-2-given-two-strings-find-all-characters-appearing-in-both/2015-05-11T00:09:10Zhttps://open.pd4cs.org/example-3-print-all-the-integers-from-1-to-1000-that-are-multiples-of-both-6-and-10/2014-08-17T19:42:27Zhttps://open.pd4cs.org/example-4-better-deal/2016-02-12T17:56:47Zhttps://open.pd4cs.org/example-5-palindromes/2016-01-31T17:27:19Zhttps://open.pd4cs.org/while-loops-in-python/2016-01-31T17:28:25Zhttps://open.pd4cs.org/example-6-sum-up-the-digits-in-an-integer/2016-01-31T17:27:24Zhttps://open.pd4cs.org/example-7-guess-a-chosen-letter-in-the-alphabet/2015-05-19T23:13:36Zhttps://open.pd4cs.org/example-8-the-use-of-a-sentinel-value-in-while-loops/2016-01-31T17:27:30Zhttps://open.pd4cs.org/while-vs-for-loops/2016-01-31T17:28:37Zhttps://open.pd4cs.org/example-9-converting-a-for-loop-into-a-while-loop/2016-01-31T17:27:36Zhttps://open.pd4cs.org/example-10-are-all-these-loops-doing-the-same-thing/2016-01-31T17:26:44Zhttps://open.pd4cs.org/example-11-sum-up-the-digits-in-an-integer/2015-08-29T00:30:59Zhttps://open.pd4cs.org/example-12-find-the-greatest-common-divisor-gcd-of-two-integers/2015-05-11T00:15:28Zhttps://open.pd4cs.org/loops-nested-loops/2016-02-14T14:41:47Zhttps://open.pd4cs.org/example-2-printing-pairs-of-integers/2016-01-31T17:17:39Zhttps://open.pd4cs.org/example-3-print-stars-in-the-following-arrangement/2016-01-31T17:17:09Zhttps://open.pd4cs.org/example-4-printing-a-multiplication-table/2016-01-31T17:17:05Zhttps://open.pd4cs.org/example-5-find-prime-numbers/2016-01-31T17:17:00Zhttps://open.pd4cs.org/example-6-summing-up-the-digits-in-many-integers/2016-02-12T18:00:58Zhttps://open.pd4cs.org/example-7-confusing-inner-and-outer-loops/2016-01-31T17:16:52Zhttps://open.pd4cs.org/loops-student-misconceptions-and-challenges/2016-01-31T17:06:34Zhttps://open.pd4cs.org/loops-external-resources/2016-01-31T17:01:07Zhttps://open.pd4cs.org/mc1-values-of-variables/2016-01-31T17:09:43Zhttps://open.pd4cs.org/mc2-correct-use-of-lists-and-arrays/2016-01-31T17:09:36Zhttps://open.pd4cs.org/mc3-boolean-expressions/2016-01-31T17:09:03Zhttps://open.pd4cs.org/mc4-infinite-loops/2016-02-12T18:02:31Zhttps://open.pd4cs.org/mc5-nested-loops/2015-08-29T00:34:21Zhttps://open.pd4cs.org/mc6-debugging-loops/2016-01-31T17:07:25Zhttps://open.pd4cs.org/mc7-there-is-no-best-loop-construct/2014-08-27T13:37:19Zhttps://open.pd4cs.org/mc8-using-break-and-continue/2014-08-27T13:37:10Zhttps://open.pd4cs.org/loops-download-programs/2015-05-20T18:24:46Zhttps://open.pd4cs.org/functions-in-python/2016-01-31T18:38:02Zhttps://open.pd4cs.org/1-why-we-write-functions/2016-01-31T18:38:20Zhttps://open.pd4cs.org/2-writing-and-using-functions/2016-02-12T17:44:45Zhttps://open.pd4cs.org/3-what-to-avoid-and-what-to-do-when-writing-functions/2016-02-12T17:51:17Zhttps://open.pd4cs.org/4-an-example-of-comparing-the-performance-of-two-functions/2015-08-28T23:04:58Zhttps://open.pd4cs.org/5-lists-as-arguments-in-functions/2016-01-31T18:44:06Zhttps://open.pd4cs.org/functions-a-class-project/2015-03-30T17:25:27Zhttps://open.pd4cs.org/functions-student-misconceptions-and-challenges/2016-02-25T20:12:59Zhttps://open.pd4cs.org/functions-download-programs/2015-02-08T16:45:08Zhttps://open.pd4cs.org/algorithms-overview/2015-06-14T23:32:43Zhttps://open.pd4cs.org/example-1-making-a-profit/2015-06-14T21:42:47Zhttps://open.pd4cs.org/program-algorithms_1_overdraft-py/2014-08-17T20:03:58Zhttps://open.pd4cs.org/example-2-rearranging-your-netflix-movie-queue/2014-08-17T20:01:56Zhttps://open.pd4cs.org/example-3-finding-the-lighter-suitcase/2015-06-14T21:42:03Zhttps://open.pd4cs.org/example-4-searching-for-an-item-in-a-list/2015-05-26T15:40:10Zhttps://open.pd4cs.org/program-algorithms_4_binarysearch-py/2014-08-17T20:04:58Zhttps://open.pd4cs.org/example-5-coin-changing/2015-05-26T15:38:12Zhttps://open.pd4cs.org/program-algorithms_5_coinchanging-py/2014-08-17T20:05:09Zhttps://open.pd4cs.org/example-6-arranging-the-pancakes/2015-05-26T15:37:02Zhttps://open.pd4cs.org/program-algorithms_6_pancake-py/2014-08-17T20:05:18Zhttps://open.pd4cs.org/example-7-the-case-of-the-mutilated-chessboard/2015-06-14T21:40:46Zhttps://open.pd4cs.org/algorithms-solving-problems/2015-05-20T18:38:38Zhttps://open.pd4cs.org/algorithms-download-programs/2015-02-13T17:20:26Zhttps://open.pd4cs.org/variables-student-misconceptions-and-challenges-in-python-2/2015-03-30T18:08:26Zhttps://open.pd4cs.org/variables-misconception-misconception-when-assigning-the-value-of-one-variable-to-another-students-may-invert-the-order-is-it-ab-or-ba/2015-08-28T22:09:49Zhttps://open.pd4cs.org/variables-misconception-assignment-a-b-1-changes-the-value-of-b-by-1-as-well-as-changing-a-2/2015-08-28T22:10:06Zhttps://open.pd4cs.org/variables-misconception-assigning-one-variables-value-to-another-links-the-variables-so-changing-one-changes-the-other-2/2015-08-28T22:10:24Zhttps://open.pd4cs.org/variables-misconception-students-think-computers-have-intelligence-and-so-know-what-value-should-be-associated-with-a-variable-name/2015-08-28T22:17:12Zhttps://open.pd4cs.org/variables-misconception-assignment-statements-like-a-b-1-are-stored-as-a-formula-rather-than-as-a-value-2/2015-08-28T22:10:44Zhttps://open.pd4cs.org/mc1-incorrect-use-of-the-return-statement-and-value-returned/2016-01-31T19:01:31Zhttps://open.pd4cs.org/mc2-confusing-the-relationship-between-names-used-for-arguments-and-names-used-for-function-parameters/2016-01-31T19:01:45Zhttps://open.pd4cs.org/mc3-all-parameters-are-passed-by-value-except-lists-and-other-mutable-objects/2014-08-17T19:57:16Zhttps://open.pd4cs.org/mc4-misunderstanding-local-vs-global-variables/2016-02-14T14:41:19Zhttps://open.pd4cs.org/mc5-the-value-of-abstracting-code-pieces-into-functions/2016-02-12T17:50:17Zhttps://open.pd4cs.org/mc6-going-from-a-description-to-the-actual-function/2014-08-17T19:57:34Zhttps://open.pd4cs.org/mc7-debugging-functions-and-code/2016-01-31T19:03:29Zhttps://open.pd4cs.org/algorithms-misconceptions-students-have/2015-05-24T13:34:14Zhttps://open.pd4cs.org/about/2016-02-25T20:31:56Zhttps://open.pd4cs.org/2016-10-28T16:31:12Zhttps://open.pd4cs.org/classes-overview/2016-02-03T22:39:33Zhttps://open.pd4cs.org/classes-python-syntax/2015-02-13T17:24:14Zhttps://open.pd4cs.org/classes-python-examples/2015-03-30T17:36:10Zhttps://open.pd4cs.org/modules-and-packages-in-python-overview/2015-06-15T21:23:59Zhttps://open.pd4cs.org/git-and-github-overview/2015-03-30T17:56:45Zhttps://open.pd4cs.org/importing-in-python/2015-02-13T17:27:02Zhttps://open.pd4cs.org/modules-and-packages-python-examples/2015-02-25T19:27:32Zhttps://open.pd4cs.org/html/2015-07-12T16:58:30Zhttps://open.pd4cs.org/cse-course-index/2016-02-25T20:09:02Zhttps://open.pd4cs.org/classes-common-misconceptions/2016-02-03T22:56:18Zhttps://open.pd4cs.org/html-2/2015-08-28T21:57:02Zhttps://open.pd4cs.org/css-2/2015-09-26T21:02:35Zhttps://open.pd4cs.org/javascript-2/2015-09-26T21:06:14Zhttps://open.pd4cs.org/php-2/2015-09-26T21:04:32Zhttps://open.pd4cs.org/common-html-errors/2015-02-13T01:35:52Zhttps://open.pd4cs.org/common-css-errors/2015-02-13T01:36:00Zhttps://open.pd4cs.org/computer-security/2016-02-03T23:38:26Zhttps://open.pd4cs.org/hierarchy-example/2015-09-26T21:03:26Zhttps://open.pd4cs.org/javascript-programming/2015-05-26T14:59:49Zhttps://open.pd4cs.org/an-example-of-common-use-of-javascript/2015-09-26T21:06:38Zhttps://open.pd4cs.org/common-javascript-errors/2015-02-13T01:36:07Zhttps://open.pd4cs.org/common-php-errors/2015-02-13T01:36:12Zhttps://open.pd4cs.org/php-programming/2015-05-26T15:24:26Zhttps://open.pd4cs.org/an-example-of-common-use-of-php/2015-09-26T21:05:08Zhttps://open.pd4cs.org/variables-overview-new/2015-08-28T22:04:37Zhttps://open.pd4cs.org/1-variables-conceptualization-for-students/2015-05-06T15:28:56Zhttps://open.pd4cs.org/2-assignment/2015-05-06T16:00:01Zhttps://open.pd4cs.org/3-variable-names/2014-09-17T18:28:41Zhttps://open.pd4cs.org/4-execution-flow-with-variables/2014-09-17T18:28:33Zhttps://open.pd4cs.org/5-roles-of-variables/2014-08-29T16:02:45Zhttps://open.pd4cs.org/recursion-overview/2015-02-09T02:19:45Zhttps://open.pd4cs.org/recursion-definitions/2015-02-09T02:20:03Zhttps://open.pd4cs.org/recursion-recursive-versus-non-recursive/2015-03-30T17:46:21Zhttps://open.pd4cs.org/recursion-misconceptions-and-challenges/2015-03-30T18:10:44Zhttps://open.pd4cs.org/recursion-algorithms/2015-03-31T00:16:00Zhttps://open.pd4cs.org/example-1-towers-of-hanoi/2014-09-11T12:50:21Zhttps://open.pd4cs.org/example-2-tiling-with-trominos/2014-09-10T17:02:48Zhttps://open.pd4cs.org/example-3-binary-search/2014-09-09T21:48:52Zhttps://open.pd4cs.org/example-4-reversing-a-string/2014-09-09T21:55:38Zhttps://open.pd4cs.org/example-5-computing-a-fibonacci-number/2014-09-09T21:49:16Zhttps://open.pd4cs.org/example-6-finding-the-greatest-common-divisor-of-two-integers-gcd/2014-09-10T04:05:43Zhttps://open.pd4cs.org/example-7-koch-snowflake/2015-06-02T19:54:57Zhttps://open.pd4cs.org/example-8-sorting/2014-09-09T21:49:37Zhttps://open.pd4cs.org/fractals-snowflake-line/2014-10-11T23:55:27Zhttps://open.pd4cs.org/fractals-snowflake/2014-10-11T23:55:57Zhttps://open.pd4cs.org/fractal-spiral/2015-06-02T19:55:43Zhttps://open.pd4cs.org/fractal-tree/2015-06-02T19:56:22Zhttps://open.pd4cs.org/assessment-overview/2016-02-07T02:27:52Zhttps://open.pd4cs.org/writing-good-assessment-questions/2016-02-07T02:30:09Zhttps://open.pd4cs.org/thumbs-up-thumbs-down/2016-02-07T02:36:16Zhttps://open.pd4cs.org/exit-cards/2016-02-07T02:36:19Zhttps://open.pd4cs.org/projects/2016-02-07T02:36:23Zhttps://open.pd4cs.org/code-reviews/2016-02-07T02:36:54Zhttps://open.pd4cs.org/exams-and-quizzes/2016-02-07T02:37:03Zhttps://open.pd4cs.org/multiple-choice/2016-02-09T18:21:31Zhttps://open.pd4cs.org/short-answer/2016-02-07T02:35:24Zhttps://open.pd4cs.org/open-ended-response/2016-02-07T02:35:28Zhttps://open.pd4cs.org/debugging-overview/2015-02-13T17:17:24Zhttps://open.pd4cs.org/debugging-bug-history/2015-02-13T17:17:35Zhttps://open.pd4cs.org/debugging-common-error-messages-in-python/2015-09-08T19:16:22Zhttps://open.pd4cs.org/syntaxerror-invalid-syntax/2014-10-11T23:47:00Zhttps://open.pd4cs.org/syntaxerror-eol-while-scanning-string-literal/2014-10-11T23:47:40Zhttps://open.pd4cs.org/indentationerror/2014-10-11T23:47:46Zhttps://open.pd4cs.org/nameerror-name-luck_number-is-not-defined/2014-10-11T23:49:03Zhttps://open.pd4cs.org/indexerror-list-index-out-of-range/2014-10-11T23:49:18Zhttps://open.pd4cs.org/zerodivisionerror-integer-division-or-modulo-by-zero/2014-10-11T23:49:27Zhttps://open.pd4cs.org/typeerror/2014-10-11T23:49:39Zhttps://open.pd4cs.org/importerror-no-module-named-randon/2014-10-11T23:49:53Zhttps://open.pd4cs.org/debugging-programs-without-an-error-message/2015-03-30T17:45:12Zhttps://open.pd4cs.org/python-tutor/2015-06-14T23:52:01Zhttps://open.pd4cs.org/canopy/2015-04-15T01:00:08Zhttps://open.pd4cs.org/idle/2014-10-15T23:30:51Zhttps://open.pd4cs.org/common-errors-without-an-error-message/2015-05-15T19:02:42Zhttps://open.pd4cs.org/what-should-we-do-if-we-have-more-appliances/2014-11-15T16:05:11Zhttps://open.pd4cs.org/what-should-we-do-if-we-have-more-than-one-salesperson/2014-10-30T12:53:34Zhttps://open.pd4cs.org/python-built-in-class-examples/2016-02-09T16:20:07Zhttps://open.pd4cs.org/example-1-list/2016-02-25T20:11:21Zhttps://open.pd4cs.org/example-2-date-time/2016-02-03T22:49:03Zhttps://open.pd4cs.org/example-3-calendar/2016-02-03T22:47:49Zhttps://open.pd4cs.org/example-4-matplotlib/2015-06-07T01:25:03Zhttps://open.pd4cs.org/classes-python-syntax-draft/2016-02-03T22:40:30Zhttps://open.pd4cs.org/initializers-methods-and-instance-variables/2014-10-29T21:36:49Zhttps://open.pd4cs.org/instance-variables-and-class-variables/2014-10-29T21:37:09Zhttps://open.pd4cs.org/private-variables-and-methods/2014-10-29T21:37:51Zhttps://open.pd4cs.org/assessment-techniques/2016-02-07T02:30:18Zhttps://open.pd4cs.org/mc-1-classes-and-objects-dont-make-programming-easier/2016-02-03T22:57:53Zhttps://open.pd4cs.org/mc-2-difficulty-distinguishing-between-the-class-and-an-object/2016-02-03T23:00:27Zhttps://open.pd4cs.org/mc-3-a-class-is-a-collection-of-instances/2014-11-18T21:29:11Zhttps://open.pd4cs.org/mc-4-understanding-the-difference-between-a-class-variable-and-an-instance-variable/2016-02-09T16:05:37Zhttps://open.pd4cs.org/mc-5-correct-syntax-for-using-classes-and-objects-is-hard/2016-02-03T22:57:11Zhttps://open.pd4cs.org/mc-6-designing-classes-is-hard/2014-11-18T21:38:45Zhttps://open.pd4cs.org/git-and-github-example-of-using-github-in-a-project/2015-03-30T17:55:38Zhttps://open.pd4cs.org/git-and-github-additional-resources/2015-03-30T17:55:49Zhttps://open.pd4cs.org/sample-page/review-questions/2014-12-12T18:11:56Zhttps://open.pd4cs.org/git-and-github-example-of-using-github-in-a-project-collaboration-part/2015-03-30T17:55:44Zhttps://open.pd4cs.org/csp-index/2015-03-31T00:14:03Zhttps://open.pd4cs.org/information-security-ciphers-and-cryptography/2016-02-03T23:55:59Zhttps://open.pd4cs.org/video-index/2015-05-06T14:47:41Zhttps://open.pd4cs.org/pd-index/2015-02-12T02:14:19Zhttps://open.pd4cs.org/functions-how-to-write-good-functions-in-python/2016-01-31T18:43:07Zhttps://open.pd4cs.org/internet-student-misconceptions-and-challenges/2015-03-30T18:11:07Zhttps://open.pd4cs.org/site-stat/2016-04-11T00:17:00Zhttps://open.pd4cs.org/teacher-stat/2016-04-11T00:15:25Zhttps://open.pd4cs.org/stat/2016-04-26T17:04:13Zhttps://open.pd4cs.org/algorithms-problems-that-have-no-algorithm/2015-05-06T15:18:18Zhttps://open.pd4cs.org/reverse-and-add-until-a-palindrome/2015-04-07T18:47:58Zhttps://open.pd4cs.org/halting-problem/2015-09-15T22:58:44Zhttps://open.pd4cs.org/wang-tiles/2016-01-24T22:29:32Zhttps://open.pd4cs.org/strings-in-python/2016-02-25T20:12:03Zhttps://open.pd4cs.org/data-structures-overview-3/2016-01-28T00:36:42Zhttps://open.pd4cs.org/data-structures-lists-in-scratch/2015-08-28T22:18:48Zhttps://open.pd4cs.org/data-structures-arrays-in-python/2016-01-28T00:44:20Zhttps://open.pd4cs.org/data-structures-lists-and-tuples-in-python/2016-01-28T00:38:55Zhttps://open.pd4cs.org/data-structures-use-of-data-structures-in-pd-material/2015-06-09T18:06:27Zhttps://open.pd4cs.org/data-structures-other-data-structures-2/2015-06-07T01:12:43Zhttps://open.pd4cs.org/data-structures-student-misconceptions-and-challenges/2016-01-31T16:27:31Zhttps://open.pd4cs.org/mc1-confusing-the-index-and-the-content/2016-02-07T15:10:31Zhttps://open.pd4cs.org/mc2-assuming-that-all-list-elements-must-be-accessed/2015-08-28T22:20:59Zhttps://open.pd4cs.org/mc3-using-an-index-lying-outside-the-list-typically-an-off-by-1-error/2016-02-28T02:49:20Zhttps://open.pd4cs.org/mc4-overwriting-values-in-a-swap-operation/2016-02-07T15:11:10Zhttps://open.pd4cs.org/mc5-one-off-errors-in-slicing/2016-01-31T16:50:52Zhttps://open.pd4cs.org/mc6-misunderstanding-immutability/2015-06-07T01:35:52Zhttps://open.pd4cs.org/mc7-differences-and-similarities-between-lists-tuples-and-arrays/2016-02-09T15:50:05Zhttps://open.pd4cs.org/mc8-incorrect-use-of-strings-integers-and-variable-names/2016-01-31T16:50:08Zhttps://open.pd4cs.org/mc9-a-list-can-contain-a-list/2015-06-07T01:36:58Zhttps://open.pd4cs.org/mc10-does-every-language-allow-negative-indices-for-lists-and-strings/2015-06-07T01:37:58Zhttps://open.pd4cs.org/mc11-print-multiple-line-strings/2015-10-20T19:23:21Zhttps://open.pd4cs.org/3003-2/2015-06-16T00:32:43Zhttps://open.pd4cs.org/conditionals-a-class-project/2015-09-09T18:26:30Zhttps://open.pd4cs.org/should-you-switch-doors/2015-08-26T17:01:30Zhttps://open.pd4cs.org/activity-1-non-programming-warm-ups/2015-08-26T17:06:42Zhttps://open.pd4cs.org/activity-2-discussion-and-coding/2015-09-08T19:29:44Zhttps://open.pd4cs.org/skeleton-and-sample-code/2015-08-23T22:17:34Zhttps://open.pd4cs.org/rock-paper-scissors-sample-code/2015-08-23T22:20:41Zhttps://open.pd4cs.org/redesign-monty-hall-game-using-a-list/2015-09-08T19:27:39Zhttps://open.pd4cs.org/private-key-encryption/2016-02-09T16:35:44Zhttps://open.pd4cs.org/public-key-cryptography/2016-02-03T23:44:00Zhttps://open.pd4cs.org/information-security-introducing-public-key-cryptography/2015-10-16T02:28:27Zhttps://open.pd4cs.org/information-security-introduction-to-the-alphabetic-rotation-cipher/2015-09-28T15:01:18Zhttps://open.pd4cs.org/information-security-rotation-cipher-project/2015-09-28T15:03:00Zhttps://open.pd4cs.org/information-security-class-activities-and-projects/2015-11-24T21:26:29Zhttps://open.pd4cs.org/information-security-malware/2016-02-03T23:45:49Zhttps://open.pd4cs.org/information-security-network-and-web-security/2016-02-04T16:50:55Zhttps://open.pd4cs.org/questions/2015-10-25T22:17:57Zhttps://open.pd4cs.org/student-facing-materials/2015-11-23T01:40:50Zhttps://open.pd4cs.org/information-security-privacy-overview/2015-11-26T16:54:24Zhttps://open.pd4cs.org/information-security-privacy-social-media-and-governments/2015-11-24T21:26:47Zhttps://open.pd4cs.org/test/2016-01-27T22:28:09Zhttps://open.pd4cs.org/undergraduate-computing-degrees/2016-02-23T19:35:25Zhttps://open.pd4cs.org/where-do-i-find-more-information/2016-02-23T19:33:22Zhttps://open.pd4cs.org/how-to-choose-among-various-computing-degrees/2016-02-23T19:34:11Zhttps://open.pd4cs.org/should-i-go-to-a-4-year-college-program/2016-02-23T19:34:49Zhttps://open.pd4cs.org/open-stat/2016-03-29T17:05:37Zhttps://open.pd4cs.org/stat-by-date/2016-04-10T23:44:03Zhttps://open.pd4cs.org/ip-stat/2016-04-12T15:26:28Zhttps://open.pd4cs.org/ip-map/2016-04-24T22:48:29Zhttps://open.pd4cs.org/3737-2/2016-07-14T00:25:38Z