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Cap sur les Automatismes

Séquence d'accueil et de consolidation des automatismes numériques (nombres, fractions, priorités opératoires) comprenant un test de positionnement et des fiches d'exercices contextualisées.

EKEmmanuelle Klaus-Baron
Premier Sillon

Accueil de la promotion, présentation des objectifs du module EG1 et évaluation diagnostique des automatismes de calcul de base.

Règles de Priorité

Rappels théoriques et exercices d'application sur les nombres, les fractions et les priorités opératoires (PEMDAS).

Maintenance de l'Exploitation

Consolidation des conversions d'unités agricoles (surfaces en hectares, volumes de cuve) et des puissances de dix, complétée par l'évaluation finale.

Cap sur les Automatismes

Séquence d'accueil et de consolidation des automatismes numériques (nombres, fractions, priorités opératoires) comprenant un test de positionnement et des fiches d'exercices contextualisées.

EKEmmanuelle Klaus-Baron

m : masse d'eau à obtenir (en kg)

M : masse brute totale (en kg)

À vous d'appliquer ces automatismes sur votre fiche de départ ! Diapositive 4/5


Prêts à tracer la route ? Démarrage

C'est parti pour le premier sillon !

Prenez votre fiche de test de positionnement. Travaillez calmement et lisez attentivement chaque consigne. Les schémas de parcelles et de cuves sont là pour vous aider à visualiser la réalité professionnelle !

Prenez confiance, faites des schémas et calculez juste !

Rentrée de la Promotion Seconde Professionnelle Agricole Diapositive 5/5

Exercice d'application rapide :

Calculez la proportion finale de terres cultivées si l'on ajoute \(\frac{2}{5}\) de luzerne et \(\frac{3}{10}\) de maïs d'une prairie :

Mise au même dénominateur :

\( \frac{2}{5} + \frac{3}{10} = \frac{\ \ \ \ }{\ \ \ \ } + \frac{3}{10} \)

Résultat final simplifié :

\( = \frac{\ \ \ \ }{10} \) de l'exploitation.

Cultiver les Nombres • Séquence d'Accueil EG1 Page 2/2

\(6\ \%\)

Masse de lait totale par jour : 1,8 L = _____________________ grammes. Masse de matières grasses : _______________________________________ = ______________ grammes.

Situation C : Répartition d'un troupeau

Un éleveur possède un cheptel de \(120\) chèvres. Il compte \(35\ \%\) de jeunes chevrettes, \(55\ \%\) de chèvres adultes en lactation et le reste de boucs. Calculez le nombre de bêtes dans chaque catégorie :

1. Chevrettes : Calcul : _____________
Nb = _________

2. Adultes : Calcul : _____________
Nb = _________

3. Boucs : Calcul : _____________
Nb = _________

Cultiver les Nombres • Séquence d'Accueil EG1 Page 2/2

4,5 \(\text{m}^3\) = ____________________ L

B. Pulvérisateur agricole : Un réservoir contient \(600\text{ L}\). Convertissez en \(\text{m}^3\) :

600 L = ______________________ \(\text{m}^3\)

3. Écrire des recensements en notation scientifique :

Exprimez les données agricoles suivantes en écriture scientifique \(a \times 10^n\) :

Production de pommes en France :

\(1\ 650\ 000\text{ tonnes}\) par an

________________________ \(\times 10^{\ \ \ \ }\) t

Taille d'une spore de champignon de rouille :

\(0,000\ 015\text{ mètres}\)

________________________ \(\times 10^{\ \ \ \ }\) m

Cultiver les Nombres • Séquence d'Accueil EG1 Page 2/2


Exercice 4 : Conversions de terrain et notation scientifique (4 points)

1. Surfaces de parcelles :

Convertir \(4,8\text{ ha}\) en \(\text{m}^2\) :

\(4,8\text{ ha}\) = _______________________ \(\text{m}^2\)

2. Volumes de pulvérisateur :

Convertir \(800\text{ Litres}\) en \(\text{m}^3\) :

\(800\text{ L}\) = _______________________ \(\text{m}^3\)

3. Notation scientifique de production : Une coopérative laitière collecte \(3\ 400\ 000\text{ Litres}\) de lait bio par an. Exprimez ce volume en écriture scientifique :

3 400 000 Litres = ________________________ \(\times 10^{\ \ \ \ }\) Litres.

Cultiver les Nombres • Séquence d'Accueil EG1 Page 2/2

  • Fiche d'exercices : Ex 1 : a) 3 ; b) 30 ; c) 14 ; d) \( 8 \times 4 = 32 \).
    Ex 2 : A = \( \frac{7}{12} \) ; B = \( \frac{8}{8} = 1 \) ; C = \( \frac{5}{10} + \frac{3}{10} = \frac{8}{10} = \frac{4}{5} \) ; D = \( \frac{3}{4} - \frac{2}{4} = \frac{1}{4} \).
    Problème 1 : a) \( \frac{5}{10} + \frac{2}{10} = \frac{7}{10} \) consommés. b) Reste = \( \frac{10}{10} - \frac{7}{10} = \frac{3}{10} \).
    Problème 2 : a) \( 60 \times 0.25 = 15 \) capitaines. b) Nouveau total = 75 marins. Proportion = 15/75 = 1/5 = 20 %.
  • 3. Corrigé du Contrôle de Routine Évaluation

    Exercice 1 (10 pts) :
    • A = \( 35 - 15 = 20 \).
    • B = \( 10 \times 10 = 100 \).
    • C = \( 15 + 4 - 2 = 17 \).
    • D = \( (20 - 12) \times 2 = 8 \times 2 = 16 \).

    Exercice 2 (10 pts) :
    1. \( F_1 = \frac{7}{15} \).
    2. \( F_2 = \frac{4}{12} + \frac{5}{12} = \frac{9}{12} = \frac{3}{4} \).

    Exercice 3 (10 pts) :
    1. Volume consommé : \( 1500 \times 0.20 = 300\text{ L} \). Volume restant : \( 1500 - 300 = 1200\text{ L} \).
    2. Conversions : 0,8 m³ = 800 L ; 4500 kg = 4,5 tonnes.
    3. Notation scientifique : 1500 = \( 1,5 \times 10^3 \) ; 0,0008 = \( 8 \times 10^{-4} \).

    Cap sur les Automatismes • Guide Enseignant Page 2/2

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