<s>
Mama	O
is	O
an	O
object-oriented	B-Language
educational	B-Language
programming	I-Language
language	I-Language
designed	O
to	O
help	O
young	O
students	O
start	O
programming	O
by	O
providing	O
all	O
language	O
elements	O
in	O
the	O
student	O
mother	O
tongue	O
.	O
</s>
<s>
Mama	B-Application
programming	I-Application
language	I-Application
is	O
available	O
in	O
several	O
languages	O
,	O
with	O
both	O
left-to-right	O
(	O
LTR	O
)	O
and	O
right-to-left	O
(	O
RTL	O
)	O
language	O
direction	O
support	O
.	O
</s>
<s>
A	O
new	O
variant	O
of	O
Mama	O
was	O
built	O
on	O
top	O
of	O
Carnegie	O
Mellon	O
's	O
Alice	B-Application
development	O
environment	O
,	O
supporting	O
scripting	O
of	O
the	O
3D	O
stage	O
objects	O
.	O
</s>
<s>
The	O
first	O
versions	O
of	O
Mama	O
-	O
1.0	O
,	O
1.1	O
and	O
1.2	O
-	O
provided	O
simple	O
integrated	B-Application
development	I-Application
environment	I-Application
(	O
IDE	O
)	O
which	O
contained	O
support	O
to	O
standard	O
elements	O
such	O
as	O
text	O
editor	O
with	O
syntax	O
highlighting	O
,	O
compiler	O
,	O
debugger	O
,	O
output	O
window	O
,	O
etc	O
.	O
</s>
<s>
Starting	O
at	O
version	O
1.5	O
,	O
Mama	O
was	O
integrated	O
with	O
the	O
open	O
source	O
Alice	B-Application
IDE	O
to	O
support	O
drag	O
and	O
drop	O
programming	O
and	O
3D	O
animating	O
.	O
</s>
<s>
Syntax	O
errors	O
frustrate	O
students	O
when	O
start	O
learning	O
programming	O
-	O
Mama	O
's	O
variant	O
over	O
Alice	B-Application
uses	O
a	O
drag	O
and	O
drop	O
environment	O
to	O
create	O
computer	O
animations	O
using	O
3D	O
models	O
.	O
</s>
<s>
Mama	O
language	O
is	O
a	O
pure	O
object-oriented	B-Language
language	I-Language
,	O
while	O
the	O
Alice	B-Application
IDE	O
is	O
object	B-Application
based	I-Application
.	O
</s>
<s>
That	O
implies	O
that	O
while	O
writing	O
textual	O
scripts	O
with	O
Mama	O
language	O
supports	O
all	O
object	B-Language
oriented	I-Language
elements	O
(	O
inheritance	B-Language
,	O
polymorphism	B-Application
,	O
generic	B-Language
programming	I-Language
,	O
Observer	B-Language
pattern	I-Language
style	O
event	O
handling	O
)	O
,	O
creating	O
objects	O
and	O
methods	O
with	O
the	O
drag	O
and	O
drop	O
interface	O
is	O
object	B-Application
based	I-Application
-	O
there	O
is	O
no	O
inheritance	B-Language
(	O
and	O
thus	O
no	O
polymorphism	B-Application
)	O
.	O
</s>
<s>
Mama	O
1.5	O
main	O
improvements	O
over	O
Alice	B-Application
version	O
2.2	O
:	O
</s>
<s>
Following	O
are	O
the	O
basic	O
types	O
available	O
in	O
Alice	B-Application
IDE	O
:	O
</s>
