Next week is our October holiday, and while some of us may be heading off to the beach and others may just be enjoying the cooler weather in Hanoi- one thing is for sure- we want to keep learning! Nothing is better than curling up with a good book under the umbrella or laying on the couch- so be sure to have a couple of good books you’ve been eager to read.
Also, pack a deck of playing cards in the suitcase! So many fun math games can be played- here are the rules to Oh No! 99
Oh No, 99!
Overview: While older elementary students are typically engaged with larger whole numbers, many still need and benefit from practice with mental addition and subtraction of smaller numbers. In this two-person card game, players attempt to force their partner to be the one to push their jointly accumulating score above 99.
The game provides practice with adding and subtracting while also giving students the chance to think strategically.
Materials Needed: A deck of playing cards (jokers removed) for each pair of students.
Card Values and Operations:
Aces: add 1
Jacks: subtract 10
Queens: wild cards that can represent any other card in the deck
Kings: add zero
All others (2–10): add their face value
Directions for Playing the Game:
- One player shuffles the cards and deals four cards to each player. The undealt cards remain in a stack, face down.
- Players take turns playing one card at a time, adding or subtracting the value of their card to or from their jointly accumulating score.
- Each time a player plays a card, he or she must replace it with the top card on the face-down stack.
- Play continues until one player forces his or her partner to go over the score of 99.