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      <pubDate>2019-06-28 04:42:31 UTC</pubDate>
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         <title>Capsule 3 Caractéristiques d&#39;un signal sonore périodique</title>
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         <pubDate>2019-07-02 14:45:05 UTC</pubDate>
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         <title>Activité 1 : Une enceinte qui résonne ( Livre Hatier p213)</title>
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         <pubDate>2019-07-02 15:27:37 UTC</pubDate>
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         <title>#DemarreTaStory</title>
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         <pubDate>2019-07-04 11:36:54 UTC</pubDate>
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         <title>Capsule 4 Risques auditifs</title>
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         <pubDate>2019-07-04 11:41:00 UTC</pubDate>
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         <title>Activité 4 Risques auditifs</title>
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         <title>#DemarreTaStory</title>
         <author>2PCG</author>
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         <pubDate>2019-07-04 13:56:32 UTC</pubDate>
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         <title>Activité 2 Astrophysicien, la lumière nous informe</title>
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         <pubDate>2019-07-04 14:04:51 UTC</pubDate>
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         <title>Activité 1 La dispersion de la lumière </title>
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         <pubDate>2019-07-04 14:08:04 UTC</pubDate>
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         <title>#DemarreTaStory</title>
         <author>2PCG</author>
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         <pubDate>2019-07-09 21:08:45 UTC</pubDate>
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         <title>Activité 2 : Guirlande et les lois des circuits électriques</title>
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         <pubDate>2019-07-09 21:32:33 UTC</pubDate>
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         <title>Capsule 1 : I et U</title>
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         <pubDate>2019-07-09 21:58:30 UTC</pubDate>
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         <title>Activité 1 :  U et I les inséparables !</title>
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         <pubDate>2019-07-11 15:56:16 UTC</pubDate>
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         <title>Activité 3 : La loi d&#39;Ohm</title>
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         <pubDate>2019-07-11 15:58:14 UTC</pubDate>
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         <title>Activité 3 : loi de la réfraction</title>
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         <pubDate>2019-07-16 12:39:37 UTC</pubDate>
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         <title>Activité 2 : Introduction à la réfraction</title>
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         <title>#DemarreTaStory</title>
         <author>2PCG</author>
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         <pubDate>2019-07-16 12:41:00 UTC</pubDate>
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         <title>Capsule 2 : Image réelle d&#39;un objet</title>
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         <pubDate>2019-07-16 13:35:04 UTC</pubDate>
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         <title>Capsule 1 : la lumière a-t-elle une vitesse ?</title>
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         <description><![CDATA[<div>à visionner avant l'activité 1</div>]]></description>
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         <pubDate>2019-07-16 13:43:56 UTC</pubDate>
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         <title>Capsule 3b : la réfraction</title>
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         <pubDate>2019-07-16 13:48:39 UTC</pubDate>
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         <title>Activité 2 Image réelle d&#39;un objet</title>
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         <pubDate>2019-08-27 12:52:44 UTC</pubDate>
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         <title>Capsule 1 : Caractériser des lentilles</title>
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         <pubDate>2019-08-27 15:25:38 UTC</pubDate>
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         <title>Activité 1 : Caractériser des lentilles (Livre Hatier p268)</title>
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         <title>Cours : Lentilles et modèle de l&#39;oeil</title>
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         <pubDate>2019-08-27 17:22:30 UTC</pubDate>
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         <title>Activité 4 L&#39;œil et ses défauts</title>
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         <title>Capsule 3 L&#39;œil, un système optique</title>
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         <title>Activité 3 : L&#39;œil, un système optique (Hatier p270)</title>
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         <title>Cours : Signaux sonores</title>
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         <pubDate>2019-09-26 20:19:03 UTC</pubDate>
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         <title>Clip prévention audition</title>
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         <pubDate>2019-10-23 20:52:05 UTC</pubDate>
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         <title>#DemarreTaStory</title>
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         <pubDate>2019-12-18 06:58:50 UTC</pubDate>
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         <title>Capsule 2-c</title>
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         <pubDate>2020-01-07 10:26:24 UTC</pubDate>
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         <title>Capsule 2-a</title>
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         <pubDate>2020-01-07 10:27:21 UTC</pubDate>
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         <title>Capsule 2-b</title>
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         <pubDate>2020-01-07 10:27:51 UTC</pubDate>
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         <title>Capsule 3a : situation de proportionnalité</title>
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         <title>Cours : Propagation de la lumière</title>
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         <title>Activité 2 ( bilan)</title>
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         <pubDate>2020-01-29 09:16:11 UTC</pubDate>
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         <title>Activité 3 Le spectre du soleil nous informe</title>
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         <title>Capsule 1 Dispersion de la lumière</title>
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         <pubDate>2020-01-29 09:18:22 UTC</pubDate>
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         <title>Cours : La lumière des étoiles</title>
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         <title>Logiciel  2 (pour l&#39;activité 2)</title>
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         <description><![CDATA[<div>Installer le logiciel CrocPhys ( gratuit et libre de droits)</div>]]></description>
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         <title>Capsule 2</title>
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         <pubDate>2020-03-18 07:02:18 UTC</pubDate>
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         <title>Activité 2 : Coup de pouce 1</title>
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