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 Printable Version
for your convenience!
Summer Jett
Tricia Whitney
GREAT ACTIVITY
Topic: Addition and Subtraction with Calculators
Grade Level: 2 - 4
Name of Activities: Nim
Now You're 21
7 - Up
1 1 Down
2001
Materials Needed: Calculator
2 People
Description of Activity:
NIM - This is a partner activity, so first place everyone
with a partner. Have them
punch in the number 21 on their calculators. The two players alternate
turns. During
their turn they must subtract 1, 2, or 3 from the number on the
calculator. Continue
until one person reaches zero or a negative number. This person
is the looser.
VARIATIONS:
Now You're 21 - Same rules apply as above, except start with
zero and add 1, 2, or 3.
First to reach 21 wins.
7 - Up - Same rules apply. Start with zero, add one
or two. First to the number seven is the winner.
11 - Down - Same rules apply. Start with eleven, subtract
one or two. First to reach zero is the winner.
2001 - Same rules apply, enter 2001, subtract 1 - 99
on each turn. First to reach zero is the winner.
*** This activity can be modified to fit the level that the students
are at.
*** You can play the game with other numbers, perhaps start with
the number of the
day, birthdays, etc.
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