NCERT Book Class 4 Mathematics (Math Mela) Chapter 10 Elephants,Tigers, and Leopards

Chapter Elephants, Tigers,
10 and Leopards

NIM Game (2 Player Game)

You have played a version of this game in the chapter ‘Vacation with
my Nani Maa’ in Grade 3. We will add either 1 or 2 each time to reach
the target number 10.
How to play?
1. Player 1 starts by choosing
either 1 or 2.
2. Player 2 can also choose
either 1 or 2 and add it to the
number chosen by Player 1.
3. The two players continue
playing by choosing either
1 or 2 and adding it to the
previous total.
4. The player who reaches 10 first is the winner.
5. Play it for a few rounds. Who wins
in each of
these cases?
Can you win the game if
a) the other player has reached the total of 6 and it
is your turn?
b) the other player has reached the total of 7 and it is your turn?
c) the other player has reached the total of 8 and it is your turn?

Note for Teachers: Encourage learners to play this game with various target
numbers. You could also help note down the sums and the results for learners
to analyse.