<div class="xblock xblock-public_view xblock-public_view-vertical" data-course-id="course-v1:MITx+22.011x+3T2018" data-runtime-class="LmsRuntime" data-init="VerticalStudentView" data-usage-id="block-v1:MITx+22.011x+3T2018+type@vertical+block@aab415706884482686167879bc8317c6" data-has-score="False" data-runtime-version="1" data-block-type="vertical" data-request-token="1bc655b2ed2e11eeb42d1299a322540b" data-graded="True">
<h2 class="hd hd-2 unit-title">1.3.7. Video Lecture</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+22.011x+3T2018+type@video+block@407dd9a24b904f499a134b03d34d23f4">
<div class="xblock xblock-public_view xblock-public_view-video xmodule_display xmodule_VideoBlock" data-course-id="course-v1:MITx+22.011x+3T2018" data-runtime-class="LmsRuntime" data-init="XBlockToXModuleShim" data-usage-id="block-v1:MITx+22.011x+3T2018+type@video+block@407dd9a24b904f499a134b03d34d23f4" data-has-score="False" data-runtime-version="1" data-block-type="video" data-request-token="1bc655b2ed2e11eeb42d1299a322540b" data-graded="True">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Video"}
</script>
<h3 class="hd hd-2">Video</h3>
<div
id="video_407dd9a24b904f499a134b03d34d23f4"
class="video closed"
data-metadata='{"ytTestTimeout": 1500, "autohideHtml5": false, "generalSpeed": 1.0, "sources": ["https://d2f1egay8yehza.cloudfront.net/MITx22.011x-V005600/MITx22.011x-V005600.m3u8", "https://d2f1egay8yehza.cloudfront.net/MITx22.011x-V005600_DTH.mp4"], "end": 0.0, "saveStateUrl": "/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@407dd9a24b904f499a134b03d34d23f4/handler/xmodule_handler/save_user_state", "speed": null, "transcriptAvailableTranslationsUrl": "/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@407dd9a24b904f499a134b03d34d23f4/handler/transcript/available_translations", "completionEnabled": false, "transcriptLanguage": "en", "streams": "1.00:sxUx27VblDw", "captionDataDir": null, "ytApiUrl": "https://www.youtube.com/iframe_api", "lmsRootURL": "https://openlearninglibrary.mit.edu", "showCaptions": "true", "ytMetadataEndpoint": "", "autoplay": false, "recordedYoutubeIsAvailable": true, "savedVideoPosition": 0.0, "transcriptLanguages": {"en": "English"}, "poster": "https://mitx-edx-video-meta-storage.s3.amazonaws.com/media/video-images/3a4019fdf43e4b158b82161064329b25.png?x-amz-security-token=IQoJb3JpZ2luX2VjEML%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCXVzLWVhc3QtMSJHMEUCIQDpSrka0oif3Ap59q%2FPYGhkFWYJ6x6z0QKnyfM9GNyyMgIgGcEEDUyOd%2BdrxbhhNm4i6DLLT6ykXbVN%2BbLCrMPbWAoqxAUI2%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARADGgw4NTkyMDU2Mzc0MTEiDPhlxTAB1fPYIqi%2B4CqYBU%2FYpmkVdTYL1YnA1xYhuIbYzOi4GYqyNIrGwNVQtuwE1KhAuz%2BGlaTQ6bHSTmjYn7k4bOh6%2BpBTnb6EgfLK8gpDwspYlbj%2F91%2BrjHtnZiJVK4iFKaeyHCB4A6ejokbPR%2FVg902y3wJs840xMoRPXhddQrfegDrf%2F54VNHnRr9h6f2QuKIyj17rOGw5hdhRGVwfYUb4uPgIttkRpaTPw679Myt5b%2Bs9Fn3Nom14pIYgLpsoymY8BsUXT%2BVFdKlSqYWC9lvittOAvEEimxI6K3iwpLYcjsND8Pn4UO0KB1KoFuaR%2FbguClSs%2FF0gIZj%2Fj4%2Bmo5GE2TwzFzEXmeXA8lEqt9RI%2F2W%2Fe%2FuKR7YsB4VbHmZMlNkTCVyTD11gX5VW02XQhUrptEJp0jgtmnv6g8KDGeD6jthkgjI2%2FrrOQeV%2Fna2H1nQ%2FkDOu7hdV7Z7W%2FhJm%2B0LWbHcgoJSj8DD0e7zyLVJ2j50Qv2d%2FXMi%2BPkz%2F8ifOzMRUoHsuMBgWl0tj9p4FN2Rp0AN7kM30IFXqJueWq%2F5zCr8M03YMwfHT4Qb6jAEKToB7Rt%2FA5XhL88PBJIPKGUr3O3929uA5UsdG9W4HGdj6xWTihh5H60aWkR%2FV4pwJtBi%2BJKVoKPmhk%2BzzzlmNj73Qynu5KsF4ZCMPpRgbEl6AaFt1LlAsCMPJ%2BJQ4I%2BFvEqInUOWoXFoM74EcDMo5gxkrJtLEWGkEg3%2FYnO0TXiXWbJ4VLTw1wSVs6zc7ruAgd6%2FTrYZAljl%2BRWjNkltRLr%2FQpYajZLTfe2xqGpwiyzq6eiOpa19dLiEdRJ3g9LjLSBFTwvkh%2Bqk%2BKUNJCSsgpD0qu3YvNeD43v0hAyVfaW%2BpKpJnqncdiYIXckV8BTKRJDYvF2Oww7eGWsAY6sQFrUmmRhUp2Bb22U7tqLY2Vdu2milTWP8%2FFmXbqUqAAQLOgl4AvBp%2FjWwCXyIJoPgRZPaWwAaTAOKIwmT62SMeJBKClxCSSnaL1sn7FRzlQ2sGT6vs3kB9TfSHVCbuPeMKaFYaUgO4tLOrRpfvrN7dAvqYtpbSgSuv%2FKN6MUMUuptBIl76gTd1xP2BychUhGRbAp6YTEL6RlYXVGAjdnteniWWh6lJ4InOrVJjerJUEbS8%3D&Signature=3ypOWCBWZQUpPJvV4jt5ihP52XI%3D&Expires=1711649579&AWSAccessKeyId=ASIA4QDFFSURQBUFWH2U", "autoAdvance": false, "prioritizeHls": false, "start": 0.0, "transcriptTranslationUrl": "/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@407dd9a24b904f499a134b03d34d23f4/handler/transcript/translation/__lang__", "completionPercentage": 0.95, "duration": 589.92, "saveStateEnabled": false, "publishCompletionUrl": "/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@407dd9a24b904f499a134b03d34d23f4/handler/publish_completion"}'
data-bumper-metadata='null'
data-autoadvance-enabled="False"
data-poster='null'
tabindex="-1"
>
<div class="focus_grabber first"></div>
<div class="tc-wrapper">
<div class="video-wrapper">
<span tabindex="0" class="spinner" aria-hidden="false" aria-label="Loading video player"></span>
<span tabindex="-1" class="btn-play fa fa-youtube-play fa-2x is-hidden" aria-hidden="true" aria-label="Play video"></span>
<div class="video-player-pre"></div>
<div class="video-player">
<div id="407dd9a24b904f499a134b03d34d23f4"></div>
<h4 class="hd hd-4 video-error is-hidden">No playable video sources found.</h4>
<h4 class="hd hd-4 video-hls-error is-hidden">
Your browser does not support this video format. Try using a different browser.
</h4>
</div>
<div class="video-player-post"></div>
<div class="closed-captions"></div>
<div class="video-controls is-hidden">
<div>
<div class="vcr"><div class="vidtime">0:00 / 0:00</div></div>
<div class="secondary-controls"></div>
</div>
</div>
</div>
</div>
<div class="focus_grabber last"></div>
<h3 class="hd hd-4 downloads-heading sr" id="video-download-transcripts_407dd9a24b904f499a134b03d34d23f4">Downloads and transcripts</h3>
<div class="wrapper-downloads" role="region" aria-labelledby="video-download-transcripts_407dd9a24b904f499a134b03d34d23f4">
<div class="wrapper-download-transcripts">
<h4 class="hd hd-5">Transcripts</h4>
<ul class="list-download-transcripts">
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@407dd9a24b904f499a134b03d34d23f4/handler/transcript/download" data-value="srt">Download SubRip (.srt) file</a>
</li>
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@video+block@407dd9a24b904f499a134b03d34d23f4/handler/transcript/download" data-value="txt">Download Text (.txt) file</a>
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-course-id="course-v1:MITx+22.011x+3T2018" data-runtime-class="LmsRuntime" data-init="VerticalStudentView" data-usage-id="block-v1:MITx+22.011x+3T2018+type@vertical+block@787d5c2ee849421e86e4da121f8da298" data-has-score="False" data-runtime-version="1" data-block-type="vertical" data-request-token="1bc655b2ed2e11eeb42d1299a322540b" data-graded="True">
<h2 class="hd hd-2 unit-title">1.3.7. Required Assessment</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+22.011x+3T2018+type@problem+block@885832b091604f9d89ac34fccf4d46a7">
<div class="xblock xblock-public_view xblock-public_view-problem xmodule_display xmodule_ProblemBlock" data-course-id="course-v1:MITx+22.011x+3T2018" data-runtime-class="LmsRuntime" data-init="XBlockToXModuleShim" data-usage-id="block-v1:MITx+22.011x+3T2018+type@problem+block@885832b091604f9d89ac34fccf4d46a7" data-has-score="True" data-runtime-version="1" data-block-type="problem" data-request-token="1bc655b2ed2e11eeb42d1299a322540b" data-graded="True">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Problem"}
</script>
<div id="problem_885832b091604f9d89ac34fccf4d46a7" class="problems-wrapper" role="group"
aria-labelledby="885832b091604f9d89ac34fccf4d46a7-problem-title"
data-problem-id="block-v1:MITx+22.011x+3T2018+type@problem+block@885832b091604f9d89ac34fccf4d46a7" data-url="/courses/course-v1:MITx+22.011x+3T2018/xblock/block-v1:MITx+22.011x+3T2018+type@problem+block@885832b091604f9d89ac34fccf4d46a7/handler/xmodule_handler"
data-problem-score="0"
data-problem-total-possible="1"
data-attempts-used="0"
data-content="
<h3 class="hd hd-3 problem-header" id="885832b091604f9d89ac34fccf4d46a7-problem-title" aria-describedby="block-v1:MITx+22.011x+3T2018+type@problem+block@885832b091604f9d89ac34fccf4d46a7-problem-progress" tabindex="-1">
Assessment 1
</h3>
<div class="problem-progress" id="block-v1:MITx+22.011x+3T2018+type@problem+block@885832b091604f9d89ac34fccf4d46a7-problem-progress"></div>
<div class="problem">
<div>
<div class="wrapper-problem-response" tabindex="-1" aria-label="Question 1" role="group"><div class="choicegroup capa_inputtype" id="inputtype_885832b091604f9d89ac34fccf4d46a7_2_1">
<fieldset aria-describedby="status_885832b091604f9d89ac34fccf4d46a7_2_1 description_885832b091604f9d89ac34fccf4d46a7_1_1">
<legend id="885832b091604f9d89ac34fccf4d46a7_2_1-legend" class="response-fieldset-legend field-group-hd">Why is proton therapy a more promising treatment for cancer than X-ray therapy?</legend>
<p class="question-description" id="description_885832b091604f9d89ac34fccf4d46a7_1_1"> Select all that apply </p>
<div class="field">
<input type="checkbox" name="input_885832b091604f9d89ac34fccf4d46a7_2_1[]" id="input_885832b091604f9d89ac34fccf4d46a7_2_1_choice_0" class="field-input input-checkbox" value="choice_0"/><label id="885832b091604f9d89ac34fccf4d46a7_2_1-choice_0-label" for="input_885832b091604f9d89ac34fccf4d46a7_2_1_choice_0" class="response-label field-label label-inline" aria-describedby="status_885832b091604f9d89ac34fccf4d46a7_2_1 description_885832b091604f9d89ac34fccf4d46a7_1_1"> Protons do the most damage at the end of their range, allowing tunable energies to reach different depths of tissue
</label>
</div>
<div class="field">
<input type="checkbox" name="input_885832b091604f9d89ac34fccf4d46a7_2_1[]" id="input_885832b091604f9d89ac34fccf4d46a7_2_1_choice_1" class="field-input input-checkbox" value="choice_1"/><label id="885832b091604f9d89ac34fccf4d46a7_2_1-choice_1-label" for="input_885832b091604f9d89ac34fccf4d46a7_2_1_choice_1" class="response-label field-label label-inline" aria-describedby="status_885832b091604f9d89ac34fccf4d46a7_2_1 description_885832b091604f9d89ac34fccf4d46a7_1_1"> X-ray therapy causes patients to become permanently radioactive
</label>
</div>
<div class="field">
<input type="checkbox" name="input_885832b091604f9d89ac34fccf4d46a7_2_1[]" id="input_885832b091604f9d89ac34fccf4d46a7_2_1_choice_2" class="field-input input-checkbox" value="choice_2"/><label id="885832b091604f9d89ac34fccf4d46a7_2_1-choice_2-label" for="input_885832b091604f9d89ac34fccf4d46a7_2_1_choice_2" class="response-label field-label label-inline" aria-describedby="status_885832b091604f9d89ac34fccf4d46a7_2_1 description_885832b091604f9d89ac34fccf4d46a7_1_1"> Proton cyclotrons are far more expensive than x-ray sources
</label>
</div>
<div class="field">
<input type="checkbox" name="input_885832b091604f9d89ac34fccf4d46a7_2_1[]" id="input_885832b091604f9d89ac34fccf4d46a7_2_1_choice_3" class="field-input input-checkbox" value="choice_3"/><label id="885832b091604f9d89ac34fccf4d46a7_2_1-choice_3-label" for="input_885832b091604f9d89ac34fccf4d46a7_2_1_choice_3" class="response-label field-label label-inline" aria-describedby="status_885832b091604f9d89ac34fccf4d46a7_2_1 description_885832b091604f9d89ac34fccf4d46a7_1_1"> Using protons minimizes radiation dose to surrounding tissues
</label>
</div>
<span id="answer_885832b091604f9d89ac34fccf4d46a7_2_1"/>
</fieldset>
<div class="indicator-container">
<span class="status unanswered" id="status_885832b091604f9d89ac34fccf4d46a7_2_1" data-tooltip="Not yet answered.">
<span class="sr">unanswered</span><span class="status-icon" aria-hidden="true"/>
</span>
</div>
</div></div>
</div>
<div class="action">
<input type="hidden" name="problem_id" value="Assessment 1" />
<div class="submit-attempt-container">
<button type="button" class="submit btn-brand" data-submitting="Submitting" data-value="Submit" data-should-enable-submit-button="True" aria-describedby="submission_feedback_885832b091604f9d89ac34fccf4d46a7" >
<span class="submit-label">Submit</span>
</button>
<div class="submission-feedback" id="submission_feedback_885832b091604f9d89ac34fccf4d46a7">
<span class="sr">Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button.</span>
</div>
</div>
<div class="problem-action-buttons-wrapper">
</div>
</div>
<div class="notification warning notification-gentle-alert
is-hidden"
tabindex="-1">
<span class="icon fa fa-exclamation-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="885832b091604f9d89ac34fccf4d46a7-problem-title">
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification warning notification-save
is-hidden"
tabindex="-1">
<span class="icon fa fa-save" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="885832b091604f9d89ac34fccf4d46a7-problem-title">None
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification general notification-show-answer
is-hidden"
tabindex="-1">
<span class="icon fa fa-info-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="885832b091604f9d89ac34fccf4d46a7-problem-title">Answers are displayed within the problem
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
</div>
"
data-graded="True">
<p class="loading-spinner">
<i class="fa fa-spinner fa-pulse fa-2x fa-fw"></i>
<span class="sr">Loading…</span>
</p>
</div>
</div>
</div>
</div>
</div>
© All Rights Reserved