Texas Instruments Little Professor Solar Manual De Instrucciones página 5

OPERATIONS
I always begin with an addition problem. If you want to change the
operation sign, press any other operation key:
J For subtraction, K For multiplication,
L For division, I For addition.
If you want to change operations (for example form Q to + ), after
a set of five problems has already begun, just press the new
operation key and I will restart with a new set of five problems.
LEVELS OF DIFFICULTY
You can practice problems at five levels of difficulty:
1 is the easiest level, 5 the most difficult one.
You will see the number of the level in the lower left corner of the
display.
I always begin with level 1.
Let's practice harder problems; just press R until you see the
level of difficulty you want.
If you change levels (for example form 3 to 4) after a set of five
problems has begun, just press S and I will restart with a new
set of five problems.
1 2
e i f m
1
3 4 5
2
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