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4
3
2
1
Grade 6
/ Some algorithms
8 exercises corrected
a
Introduction
(6 exercices)
Scratch
(7 exercices)
Scratch and loop
(2 exercices)
1.
Intr
o
duction
E.6714
The
arro
w
m
ust
follo
w
the
path
to
reac
h
the
square
:
Use
the
follo
wing
actions
to
complete
the
route
:
E.6715
The
arro
w
m
ust
follo
w
the
path
to
reac
h
the
square
:
Use
the
follo
wing
actions
to
complete
the
path
E.6716
The
arro
w
m
ust
follo
w
the
path
to
reac
h
the
square
:
Use
the
follo
wing
actions
to
complete
the
path
:
E.6717
The
arro
w
m
ust
follo
w
the
path
to
reac
h
the
square
:
Use
a
lo
op
and
the
minim
um
n
um
b
er
of
actions
to
complete
the
path
:
E.6718
The
arro
w
m
ust
follo
w
the
path
to
reac
h
the
square.
Use
t
w
o
lo
ops
and
the
min-
im
um
n
um
b
er
of
actions
to
complete
the
path
:
h
ttps:/
/c
hingmath.fr
sacados/6714
sacados/6715
sacados/6716
sacados/6717
sacados/6718
E.10197
Op
en
y
our
bro
wser
and
create
a
new
Scratc
h
program
b
y
going
to
the
follo
wing
address
:
https
://scratch.mit.edu/
1
a
Build
the
follo
wing
program
:
b
What
is
the
figure
dra
wn
b
y
Scratc
h?
Justify
y
our
answ
er.
2
Mo
dify
y
our
program
so
that
y
our
sprite
dra
ws
the
fol-
lo
wing
t
w
o
shap
es
:
2.
Scr
atch
E.10879
Using
Scratc
h
soft
w
are,
create
the
t
w
o
figures
b
elo
w
:
E.10880
1
Op
en
Scratc
h
and
cop
y
the
co
de
b
elo
w
:
2
Successiv
ely
mo
dify
y
our
co
de
to
obtain
the
follo
wing
results
:
h
ttps:/
/c
hingmath.fr
sacados/10197
quand
est cliqué
e∑acer tout
stylo en position d’écriture
avancer de
100
pas
tourner
de
90
degrés
avancer de
100
pas
tourner
de
90
degrés
avancer de
100
pas
tourner
de
90
degrés
avancer de
100
pas
tourner
de
90
degrés
Figure 1
Figure 2
sacados/10879
a
50
50
b
95
70
95
30
85
sacados/10880
a
b
E.10887
Mo
dify
the
co
de
b
elo
w
to
obtain
the
dra
wing
b
elo
w
:
to
obtain
the
pattern
:
Y
ou
can
use
some
of
the
indications
b
elo
w
:
E.10888
Building
the
figure
:
E.10889
W
e
w
an
t
to
build
the
w
all
b
elo
w
By
completing
the
co
de
:
h
ttps:/
/c
hingmath.fr
sacados/10887
60
o
180
o
120
o
sacados/10888
sacados/10889
E.10940
Consider
the
four
diagrams
b
elo
w,
where
the
elf
is
sho
wn
in
its
starting
p
osition
:
Matc
h
eac
h
of
the
figures
ab
o
v
e
with
one
of
the
co
des
b
elo
w
:
E.10942
Use
Scratc
h
to
repro
duce
the
p
en
tagon
b
elo
w
:
3.
Scr
atch
and
lo
op
E.10939
W
e
wish
to
repro
duce
the
frieze
b
elo
w
:
Note
that
this
design
rep
eats
the
same
motif
:
Complete
the
co
de
lo
op
b
elo
w
to
create
this
frieze
:
E.10941
Let’s
try
it
out
using
the
co
de
b
e-
lo
w
as
an
example
:
Cop
y
and
complete
the
lo
op
b
elo
w
to
obtain
the
image
on
the
left
:
h
ttps:/
/c
hingmath.fr
sacados/10940
sacados/10942
A
B
C
D
E
I
O
54
o
72
o
sacados/10939
sacados/10941
h
ttps:/
/c
hingmath.fr
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