Prévoir la phase de la Lune 1

$val10 $val41. $(val11[1;]):
$(val31[$(val43[1])]).
$(val11[2;1]) $val46 $(val11[2;2])?

Prévoir la phase de la Lune 1 (P)

$val10 $val34. $(val11[1;]):
$(val32[$(val36[1])]).
$(val11[2;1]) $val39 $(val11[2;2])?
P. Causeret / CLEA

Prévoir la phase de la Lune 2

$val10 $val41. $(val11[1;]):
$(val31[$(val43[1])]).
$(val11[2;1]) $val46 $(val11[2;2])?

Prévoir la phase de la Lune 2 (P)

$val10 $val34. $(val11[1;]):
$(val32[$(val36[1])]).
$(val11[2;1]) $val39 $(val11[2;2])?
P. Causeret / CLEA

Éclipse

$val10

$val10 $(val9[$val17]).

$val12 $val11
$val81 $val83
$val14

Éclipse (sans aide graphique)

$val10

$val10 $(val9[$val17]).

$val12 $val11
$val80 $val82
$val14

Écran 1

$val9? $val21 userdraw segment,blue
$val8

Écran 2

$val9? $val21 userdraw segment,blue
$val8

Écran 3

$val9? $val21 userdraw segment,blue
$val8

Écran 4

$val9? $val22 userdraw segment,blue
$val8

Ombre 1

$val9. $val35 $val30 linewidth 1 userdraw segment, blue $val10?
$val8

Ombre 2

$val9 A. $val11 $(val10[$val14]).

Phases de la Lune Nord

$val9 $val40.
$(val31[1])

Phases de la Lune Nord (P)

$val9 $val33.
$(val32[1])

Phases de la Lune Sud

$val9 $val40.
$(val31[1])

Sources de lumière 1

$val15?

Sources de lumière 2

$val11:
$(val9[$val12])

Tabouret

$val25
$val24
$val12
cm.

Trajet de la lumière

$val9
$val20 userdraw segment,blue
$val10 ,
$val8