{"id":2696,"date":"2020-07-30T21:16:23","date_gmt":"2020-07-30T19:16:23","guid":{"rendered":"http:\/\/wordpress.callac.online\/?page_id=2696"},"modified":"2023-10-14T20:11:45","modified_gmt":"2023-10-14T18:11:45","slug":"des-videos-sur-scratch","status":"publish","type":"page","link":"https:\/\/wordpress.callac.online\/index.php\/mes-partages\/pour-le-college\/des-videos-sur-scratch\/","title":{"rendered":"Des vid\u00e9os sur Scratch"},"content":{"rendered":"\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>Vous trouverez ici 15 activit\u00e9s Scratch corrig\u00e9s, le plus souvent sous forme de vid\u00e9os. Pour travailler en autonomie.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programme 1<\/h2>\n\n\n\n<p>Programme initial :<\/p>\n<ul>\n<li>choisir un entier naturel<\/li>\n<li>dire s&rsquo;il est pair ou impair.<\/li>\n<\/ul>\n<div class=\"mediaplugin mediaplugin_videojs\">\n<div id=\"id_videojs_5f2319e966334_1\" class=\"video-js vjs-paused vjs-fluid id_videojs_5f2319e966334_1-dimensions vjs-controls-enabled vjs-workinghover vjs-v7 vjs-user-active\" lang=\"fr\" tabindex=\"-1\" title=\"scratch_pair_impair.mp4\" role=\"region\" data-setup-lazy=\"{&quot;language&quot;: &quot;fr&quot;, &quot;fluid&quot;: true}\" aria-label=\"Lecteur vid\u00e9o\">\n<div style=\"width: 640px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-2696-1\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch01%20%3A%20Arithm%C3%A9tique\/scratch_pair_impair.mp4?_=1\" \/><a href=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch01%20%3A%20Arithm%C3%A9tique\/scratch_pair_impair.mp4\">https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch01%20%3A%20Arithm%C3%A9tique\/scratch_pair_impair.mp4<\/a><\/video><\/div>\n<\/div>\n<\/div>\n<p>Pour aller plus loin :<\/p>\n<ul>\n<li>modifier ce programme pour tester&nbsp; si un nombre est divisible par 7, par exemple.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programme 2<\/h2>\n\n\n\n<p>Programme initial :<\/p>\n<ul>\n<li>dessiner un carr\u00e9<\/li>\n<li>dessiner plusieurs carr\u00e9 en utilisant les blocs<\/li>\n<\/ul>\n<div class=\"mediaplugin mediaplugin_videojs\">\n<div id=\"id_videojs_5f231bc7cfb2c_6\" class=\"video-js vjs-paused vjs-fluid id_videojs_5f231bc7cfb2c_6-dimensions vjs-controls-enabled vjs-workinghover vjs-v7 vjs-user-active\" lang=\"fr\" tabindex=\"-1\" title=\"scratch_carres.mp4\" role=\"region\" data-setup-lazy=\"{&quot;language&quot;: &quot;fr&quot;, &quot;fluid&quot;: true}\" aria-label=\"Lecteur vid\u00e9o\">\n<div style=\"width: 640px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-2696-2\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch02%20%3A%20Triangle%20rectangle\/scratch_carres.mp4?_=2\" \/><a href=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch02%20%3A%20Triangle%20rectangle\/scratch_carres.mp4\">https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch02%20%3A%20Triangle%20rectangle\/scratch_carres.mp4<\/a><\/video><\/div>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<p>Pour aller plus loin :<\/p>\n<ul>\n<li>dessiner d&rsquo;autres figures en utilisant les blocs<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programme 3<\/h2>\n\n\n\n<p>Programme initial :<\/p>\n<ul>\n<li>Convertir des secondes en minutes et secondes<\/li>\n<\/ul>\n<div class=\"mediaplugin mediaplugin_videojs\">\n<div id=\"id_videojs_5f23355a8f66a_5\" class=\"video-js vjs-paused vjs-fluid id_videojs_5f23355a8f66a_5-dimensions vjs-controls-enabled vjs-workinghover vjs-v7 vjs-user-active\" lang=\"fr\" tabindex=\"-1\" title=\"scratch_conversions.mp4\" role=\"region\" data-setup-lazy=\"{&quot;language&quot;: &quot;fr&quot;, &quot;fluid&quot;: true}\" aria-label=\"Lecteur vid\u00e9o\">\n<div style=\"width: 640px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-2696-3\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch03%20%3A%20Proportionnalit%C3%A9\/scratch_conversions.mp4?_=3\" \/><a href=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch03%20%3A%20Proportionnalit%C3%A9\/scratch_conversions.mp4\">https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch03%20%3A%20Proportionnalit%C3%A9\/scratch_conversions.mp4<\/a><\/video><\/div>\n<\/div>\n<\/div>\n<p>Pour aller plus loin :<\/p>\n<ul>\n<li>Convertir des secondes en heures, minutes et secondes<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programme 4<\/h2>\n\n\n\n<p>Programme initial :<\/p>\n<ul>\n<li>Programmer \u00ab\u00a0<span style=\"font-size: 15.9375px; white-space: nowrap;\">a puissance n\u00a0\u00bb<\/span>&nbsp;en utilisant des multiplications successives.<\/li>\n<\/ul>\n<div class=\"mediaplugin mediaplugin_videojs\">\n<div>&nbsp;<\/div>\n<\/div>\n<div style=\"width: 640px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-2696-4\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch04%20%3A%20Calcul%20num%C3%A9rique\/scratch_puissance.mp4?_=4\" \/><a href=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch04%20%3A%20Calcul%20num%C3%A9rique\/scratch_puissance.mp4\">https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch04%20%3A%20Calcul%20num%C3%A9rique\/scratch_puissance.mp4<\/a><\/video><\/div>\n<p>Pour aller plus loin :<\/p>\n<ul>\n<li>Remplacer des multiplications par des additions successives.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programme 5<\/h2>\n\n\n\n<p>Figures compos\u00e9es de triangles \u00e9quilat\u00e9raux<\/p>\n<div style=\"width: 640px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-2696-5\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch05%20%3A%20Th%C3%A9or%C3%A8me%20de%20Thal%C3%A8s\/scratch_triangles.mp4?_=5\" \/><a href=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch05%20%3A%20Th%C3%A9or%C3%A8me%20de%20Thal%C3%A8s\/scratch_triangles.mp4\">https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch05%20%3A%20Th%C3%A9or%C3%A8me%20de%20Thal%C3%A8s\/scratch_triangles.mp4<\/a><\/video><\/div>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programme 6<\/h2>\n\n\n\n<p>Programme initial :<\/p>\n<ul>\n<li>programme simulant un d\u00e9veloppement de <span class=\"nolink\"><span id=\"MathJax-Element-1-Frame\" class=\"MathJax\" style=\"box-sizing: border-box; display: inline; font-style: normal; font-weight: normal; line-height: normal; font-size: 15.9375px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;\" tabindex=\"0\" role=\"presentation\" data-mathml=\"<math xmlns=&quot;http:\/\/www.w3.org\/1998\/Math\/MathML&quot;><mo stretchy=&quot;false&quot;>(<\/mo><mi>c<\/mi><mi>x<\/mi><mo>+<\/mo><mi>d<\/mi><msup><mo stretchy=&quot;false&quot;>)<\/mo><mn>2<\/mn><\/msup><\/math>\u00ab\u00a0><span class=\"MJX_Assistive_MathML\" role=\"presentation\">(cx+d)^2<\/span><\/span><\/span> o\u00f9&nbsp;<span class=\"nolink\"><span id=\"MathJax-Element-2-Frame\" class=\"MathJax\" style=\"box-sizing: border-box; display: inline; font-style: normal; font-weight: normal; line-height: normal; font-size: 15.9375px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;\" tabindex=\"0\" role=\"presentation\" data-mathml=\"<math xmlns=&quot;http:\/\/www.w3.org\/1998\/Math\/MathML&quot;><mi>c<\/mi><\/math>\u00ab\u00a0><span class=\"MJX_Assistive_MathML\" role=\"presentation\">c<\/span><\/span><\/span> et&nbsp;<span class=\"nolink\"><span id=\"MathJax-Element-3-Frame\" class=\"MathJax\" style=\"box-sizing: border-box; display: inline; font-style: normal; font-weight: normal; line-height: normal; font-size: 15.9375px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;\" tabindex=\"0\" role=\"presentation\" data-mathml=\"<math xmlns=&quot;http:\/\/www.w3.org\/1998\/Math\/MathML&quot;><mi>d<\/mi><\/math>\u00ab\u00a0><span class=\"MJX_Assistive_MathML\" role=\"presentation\">d<\/span><\/span><\/span>&nbsp;sont choisis.<\/li>\n<\/ul>\n<div class=\"mediaplugin mediaplugin_videojs\">\n<div id=\"id_videojs_5f2336cc58f83_5\" class=\"video-js vjs-paused vjs-fluid id_videojs_5f2336cc58f83_5-dimensions vjs-controls-enabled vjs-workinghover vjs-v7 vjs-user-active\" lang=\"fr\" tabindex=\"-1\" title=\"scratch_IR.mp4\" role=\"region\" data-setup-lazy=\"{&quot;language&quot;: &quot;fr&quot;, &quot;fluid&quot;: true}\" aria-label=\"Lecteur vid\u00e9o\">\n<div style=\"width: 640px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-2696-6\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch06%20%3A%20Calcul%20litt%C3%A9ral\/scratch_IR.mp4?_=6\" \/><a href=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch06%20%3A%20Calcul%20litt%C3%A9ral\/scratch_IR.mp4\">https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch06%20%3A%20Calcul%20litt%C3%A9ral\/scratch_IR.mp4<\/a><\/video><\/div>\n<\/div>\n<\/div>\n<p>Pour aller plus loin :<\/p>\n<ul>\n<li>recommencer avec une autre identit\u00e9 remarquable.<\/li>\n<li>am\u00e9liorer l&rsquo;affichage.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programme 7<\/h2>\n\n\n\n<p>Programme initial :<\/p>\n<ul>\n<li>Calcul de la moyenne d&rsquo;une liste de nombre<\/li>\n<\/ul>\n<div style=\"width: 640px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-2696-7\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch07%20%3A%20Statistiques\/scratch_moyenne.mp4?_=7\" \/><a href=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch07%20%3A%20Statistiques\/scratch_moyenne.mp4\">https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch07%20%3A%20Statistiques\/scratch_moyenne.mp4<\/a><\/video><\/div>\n<p>Pour aller plus loin :<\/p>\n<ul>\n<li>Utiliser les blocs pour le calcul de la moyenne, mais aussi pour initialiser la s\u00e9rie.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programme 8<\/h2>\n\n\n\n<p>L&rsquo;objectif est de construire la figure suivante :<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"img-responsive atto_image_button_text-bottom\" role=\"presentation\" src=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Progression\/Scratch_ch08\/figure.png\" alt=\"\" width=\"238\" height=\"232\"><br><br>On donne les blocs suivants :<br><br><img loading=\"lazy\" decoding=\"async\" class=\"img-responsive atto_image_button_text-bottom\" role=\"presentation\" src=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Progression\/Scratch_ch08\/blocs.png\" alt=\"\" width=\"415\" height=\"371\"><br><br><br>La solution est&nbsp;<a href=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Progression\/Scratch_ch08\/solution.png\" target=\"_blank\" rel=\"noopener noreferrer\">ici<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programme 9<\/h2>\n\n\n\n<p>Cr\u00e9er des programmes qui permettent de s&rsquo;entra\u00eener au calcul mental.<\/p>\n<p><a href=\"https:\/\/scratch.mit.edu\/projects\/401400839\/fullscreen\/\" target=\"_blank\" rel=\"noopener noreferrer\">Exemple<\/a>&nbsp;: on choisit au hasard deux nombres entre 10 et 50 et on doit trouver leur somme.<\/p>\n<p>La solution est&nbsp;<a href=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Progression\/Scratch_09\/image1.png\" target=\"_blank\" rel=\"noopener noreferrer\">ici<\/a>.<\/p>\n<div style=\"width: 640px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-2696-8\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch09%20%3A%20Probabilit%C3%A9s\/scratch_calcul.mp4?_=8\" \/><a href=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch09%20%3A%20Probabilit%C3%A9s\/scratch_calcul.mp4\">https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch09%20%3A%20Probabilit%C3%A9s\/scratch_calcul.mp4<\/a><\/video><\/div>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programme 10<\/h2>\n\n\n\n<p>R\u00e9aliser un programme qui permet de calculer des images de nombres par une fonction.<\/p>\n<p><a href=\"https:\/\/scratch.mit.edu\/projects\/401742468\/fullscreen\/\" target=\"_blank\" rel=\"noopener noreferrer\">Exemple<\/a> :&nbsp;<span class=\"nolink\"><span id=\"MathJax-Element-1-Frame\" class=\"MathJax\" style=\"box-sizing: border-box; display: inline; font-style: normal; font-weight: normal; line-height: normal; font-size: 15.9375px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;\" tabindex=\"0\" role=\"presentation\" data-mathml=\"<math xmlns=&quot;http:\/\/www.w3.org\/1998\/Math\/MathML&quot;><mi>f<\/mi><mo stretchy=&quot;false&quot;>(<\/mo><mi>x<\/mi><mo stretchy=&quot;false&quot;>)<\/mo><mo>=<\/mo><mo stretchy=&quot;false&quot;>(<\/mo><mi>x<\/mi><mo>+<\/mo><mn>3<\/mn><mo stretchy=&quot;false&quot;>)<\/mo><mo stretchy=&quot;false&quot;>(<\/mo><mi>x<\/mi><mo>&amp;#x2212;<\/mo><mn>2<\/mn><mo stretchy=&quot;false&quot;>)<\/mo><\/math>\u00ab\u00a0><span class=\"MJX_Assistive_MathML\" role=\"presentation\">f(x)=(x+3)(x\u22122)<\/span><\/span><\/span>. On clique sur la barre d&rsquo;espace pour avoir une image.<\/p>\n<p>La solution est&nbsp;<a href=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Progression\/Scratch_ch10\/image01.png\" target=\"_blank\" rel=\"noopener noreferrer\">ici<\/a>.<\/p>\n<div style=\"width: 640px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-2696-9\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch10%20%3A%20Notion%20de%20fonction\/scratch_images.mp4?_=9\" \/><a href=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch10%20%3A%20Notion%20de%20fonction\/scratch_images.mp4\">https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch10%20%3A%20Notion%20de%20fonction\/scratch_images.mp4<\/a><\/video><\/div>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programme 11<\/h2>\n\n\n\n<p>Le but est de cr\u00e9er un programme qui dessine un triangle rectangle :<\/p>\n<ul id=\"yui_3_17_2_1_1596143842473_26\">\n<li>le lutin avance sur la droite d&rsquo;une longueur L ;<\/li>\n<li>le lutin tourne \u00e0 gauche d&rsquo;un angle droit ;<\/li>\n<li>le lutin avance d&rsquo;une longueur l ;<\/li>\n<li id=\"yui_3_17_2_1_1596143842473_25\">il faut maintenant revenir au d\u00e9part : pour cela, on va calculer l&rsquo;angle \u00e0 tourner, et la longueur \u00e0 avancer.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programme 12<\/h2>\n\n\n\n<p>L&rsquo;objectif est de cr\u00e9er un programme qui cr\u00e9e une fonction affine al\u00e9atoirement.&nbsp;<\/p>\n<p>L&rsquo;utilisateur a trois essais pour retrouver les valeurs de a et de b.<\/p>\n<p>Voici une&nbsp;<a href=\"https:\/\/scratch.mit.edu\/projects\/407355244\/fullscreen\/\" target=\"_blank\" rel=\"noopener noreferrer\">version basique de ce programme<\/a>.<\/p>\n<p>Voici la vid\u00e9o de sa construction.<\/p>\n<div style=\"width: 640px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-2696-10\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch12%20%3A%20Fonctions%20affines\/scratch_affine.mp4?_=10\" \/><a href=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch12%20%3A%20Fonctions%20affines\/scratch_affine.mp4\">https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Vid%C3%A9os%20de%203%C3%A8me\/Ch12%20%3A%20Fonctions%20affines\/scratch_affine.mp4<\/a><\/video><\/div>\n<p>N&rsquo;h\u00e9sitez pas d&rsquo;aller plus loin en am\u00e9liorant ce programme basique pour en faire un jeu.<\/p>\n<div class=\"mediaplugin mediaplugin_videojs\">\n<div id=\"id_videojs_5f23394cbe966_4\" class=\"video-js vjs-paused vjs-fluid id_videojs_5f23394cbe966_4-dimensions vjs-controls-enabled vjs-workinghover vjs-v7 vjs-user-active\" lang=\"fr\" tabindex=\"-1\" title=\"scratch_affine.mp4\" role=\"region\" data-setup-lazy=\"{&quot;language&quot;: &quot;fr&quot;, &quot;fluid&quot;: true}\" aria-label=\"Lecteur vid\u00e9o\">&nbsp;<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programme 13<\/h2>\n\n\n\n<p>R\u00e9aliser un programme qui construit cette figure :<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"img-responsive atto_image_button_text-bottom\" role=\"presentation\" src=\"https:\/\/filedn.com\/lpKG7uY9hIHVel5exA5Ik80\/3eme\/Progression\/Scratch_ch13\/image.png\" alt=\"\" width=\"486\" height=\"272\"><\/p>\n<p>Une solution est&nbsp;<a href=\"https:\/\/scratch.mit.edu\/projects\/407956646\/fullscreen\/\" target=\"_blank\" rel=\"noopener noreferrer\">ici<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programme 14<\/h2>\n\n\n\n<p><b>Difficile !<\/b><\/p>\n<p>Cr\u00e9er un programme dont le but est de deviner un nombre myst\u00e8re :<\/p>\n<ul>\n<li>le programme choisit un entier entre 1 et 100 ;<\/li>\n<li>l&rsquo;utilisateur a 6 essais pour deviner le nombre.<\/li>\n<li>le programme lui dit \u00e0 chaque fois si son essai est trop petit ou trop grand, ou s&rsquo;il a trouv\u00e9.<\/li>\n<\/ul>\n<p>Voici un&nbsp;<a href=\"https:\/\/scratch.mit.edu\/projects\/408111082\/fullscreen\/\" target=\"_blank\" rel=\"noopener noreferrer\">exemple de ce jeu<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Programme 15<\/h2>\n\n\n\n<p>Cr\u00e9er un programme qui fait ceci :<\/p>\n<ul>\n<li>on choisit un nombre ;<\/li>\n<li>on enl\u00e8ve 5;<\/li>\n<li>on triple ;<\/li>\n<li>on ajoute 10 ;<\/li>\n<li>on double ;<\/li>\n<li>on ajoute 10 ;<\/li>\n<li>on divise par 3.<\/li>\n<\/ul>\n<p>Relancer plusieurs fois ce programme. Que remarque-t-on. Justifier ce comportement \u00e0 l&rsquo;aide du calcul litt\u00e9ral.<\/p>\n<p>Le programme est\u00a0<a href=\"https:\/\/scratch.mit.edu\/projects\/408266354\/fullscreen\/\" target=\"_blank\" rel=\"noopener noreferrer\">ici<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n","protected":false},"excerpt":{"rendered":"<p>Vous trouverez ici 15 activit\u00e9s Scratch corrig\u00e9s, le plus souvent sous forme de vid\u00e9os. Pour travailler en autonomie. Programme 1 Programme initial : choisir un entier naturel dire s&rsquo;il est&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2646,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2696","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Des vid\u00e9os sur Scratch - Maths &amp; Num\u00e9rique<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/wordpress.callac.online\/index.php\/mes-partages\/pour-le-college\/des-videos-sur-scratch\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Des vid\u00e9os sur Scratch - Maths &amp; Num\u00e9rique\" \/>\n<meta property=\"og:description\" content=\"Vous trouverez ici 15 activit\u00e9s Scratch corrig\u00e9s, le plus souvent sous forme de vid\u00e9os. 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