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Mesurer le poids avec les 6e

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Bertrand Benjamin 2017-10-23 09:55:04 +03:00
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6e/Unites/Poids_fraction/Bilan_mesurer_poids.tex Normal file
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\documentclass[a5paper,12pt]{article}
\usepackage{myXsim}
\date{Octobre 2017}
\title{Comment mesure-t-on un poids avec une balance?}
\tribe{Sixième}
\pagestyle{empty}
\geometry{left=10mm,right=10mm, top=10mm}
\newcommand{\lecours}{%
\textbf{Comment mesure-t-on un poids avec une balance?}
\medskip
\begin{minipage}{0.4\textwidth}
\includegraphics[scale=0.7]{./fig/balance_equi}
\end{minipage}
\begin{minipage}{0.55\textwidth}
Nous devons mettre des poids d’un côté pour que la flèche soit au centre.
Ici, la banane pèse \dotfill
\end{minipage}
La flèche penche toujours du côté le plus lourd.
\begin{minipage}{0.4\textwidth}
\includegraphics[scale=0.7]{./fig/balance_trop}
\end{minipage}
\begin{minipage}{0.5\textwidth}
Il y a trop de poids, il faut en \\[0.2cm] \parbox{4cm}{\dotfill}
Ici, la banane pèse \dotfill
\end{minipage}
\begin{minipage}{0.4\textwidth}
\includegraphics[scale=0.7]{./fig/balance_moins}
\end{minipage}
\begin{minipage}{0.5\textwidth}
Il n'y a pas assez de poids, il faut en \\[0.2cm] \parbox{4cm}{\dotfill}
Ici, la banane pèse \dotfill
\end{minipage}
}
\begin{document}
\lecours
\vfill
\lecours
\end{document}
%%% Local Variables:
%%% mode: latex
%%% TeX-master: "master"
%%% End:

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6e/Unites/Poids_fraction/E1_peser_trousse.tex Normal file
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\documentclass[a5paper,12pt]{article}
\usepackage{myXsim}
\date{Octobre 2017}
\title{Peser sa trousse.}
\tribe{Sixième}
\pagestyle{empty}
\geometry{left=10mm,right=10mm, top=5mm}
\begin{document}
\begin{exercise}[subtitle={Peser sa trousse \Cher \Rep}]
\begin{enumerate}
\item Chaque élève du groupe pèse sa trousse. On écrit les résultats dans le tableau.
\begin{tabular}{|p{4cm}|p{5cm}|}
\hline
Nom de l'élève & Poids \\
\hline
& \\
\hline
& \\
\hline
& \\
\hline
& \\
\hline
& \\
\hline
\end{tabular}
\item Qui a la trousse la plus lourde?
\item Combien pèse la trousse la plus légère?
\end{enumerate}
\end{exercise}
\vspace{-0.5cm}
\printexercise{exercise}{1}
\end{document}
%%% Local Variables:
%%% mode: latex
%%% TeX-master: "master"
%%% End:

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6e/Unites/Poids_fraction/index.rst
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@ -2,25 +2,21 @@ Mesurer des poids et comparer les fractions avec les 6e pour l'année 2017-2018
##############################################################################
:date: 2017-10-19
:modified: 2017-10-19
:modified: 2017-10-23
:authors: Bertrand Benjamin
:category: 6e
:tags: Unité, Fractions
:summary: Mesurer des poids en utilisant les fractions pour trouver des relations entre les fractions avec les 6e pour l'année 2017-2018.
/!\ Construire des poids et des fractions de poids sans liens avec leurs volumes.
Étape 1
=======
Chaque groupe a une balance et un sac avec des ballons de poids. On demande à chaque équipe de nous dire qui a la trousse la plus lourde.
Chaque groupe a une balance et un sac avec des ballons de poids. Les élèves `pèsent leur trousse et comparent les poids <./E1_peser_trousse.pdf>`_.
Les élèves doivent découvrir comment utiliser la balance et s'approprier fractions de poids. Ils doivent être désorienté car les poids ne correspondent pas à leurs volumes.
Bilan de synthèse sur comment mesurer un poids avec une balance. On appuie sur la nécessité de vérifier l'homogénéité des poids.
/!\ dessin avec des balances.
Bilan de synthèse sur `comment mesurer un poids avec une balance <./Bilan_mesurer_poids.pdf>`_. On appuie sur la nécessité de vérifier l'homogénéité des poids entre eux.
Étape 2
=======