Race to Twenty Card Game for FUN Learning Addition

jeu de cartes de 2 joueurs, qui peuvent atteindre le nombre cible 20? grand plaisir d'ajouter!

About

This card game designed to help understand how to always be the first person to reach 20 by allowing students to develop their own thinking about the rules of reaching twenty.

Let assume end in the last number, say 20

Start is the beginning number say 0

largest card number is say, n = 11 for both RED and BLUE players.

The hint is to always win, you need to reach (end-start) - n -1 , which is 8 so that whatever the next move by the opponent ranging from 1 to 11, you can place your next card to reach end =20!

Another example is

Let assume end in the last number, say 20

Start is the beginning number say 0

largest card number is say, n = 5 for both RED and BLUE players.

So the AI step is = end - i*(n+1),

so stepAI[0] = 20 -0*(5+1) = 20

stepAI[1] = 20-1*(5+1) = 14

stepAI[2] = 20-2*(5+1) = 8

stepAI[3] = 20-3*(5+1) = 2

so to win, try to land on 2, followed by 8, followed by 14 and lastly to win 20!

enjoy!

Game play can be made more challenging by varying target end number from default 20 to 40 for example.

start number from default of 0 to 10 for example

number of cards available to players, default is 11

odd numbers card only for player 1 or 2

even numbers cards only for player 1 or 2

more resources can be found here

http://iwant2study.org/ospsg/index.php/interactive-resources/mathematics

Interesting Fact

This app is created to support playing of adding up in creative and challenging ways.

Acknowledgement

This physical card game was originally shown to me and conceptualized by Theresa Heng.

My sincere gratitude for the tireless contributions of Francisco Esquembre, Fu-Kwun Hwang, Wolfgang Christian, Félix Jesús García Clemente, Anne Cox, Andrew Duffy, Todd Timberlake and many more in the Open Source Physics community.

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