Group Activity Cards
Numbers
and Operations
Number of players: 2
Materials: Index cards, spinners

Plug It In

Copy onto cards the expressions shown below, one per card. Shuffle the cards and place them face down in a pile. Label equal sections of one spinner "5," "3," "1," "2," "3," "6." You will replace the variable a in the expressions on the cards with these numbers. Label equal sections of another spinner "6," "4," "2," "1," "4," "5." You will replace the variable b with these numbers.
One partner flips over a card. Try to be the first to evaluate the expression correctly by replacing the variables with the numbers on the spinners. The winner of each round gets 1 point. Continue, taking turns flipping over cards, until no cards remain in the pile. The overall winner is the partner with the most points.
Expressions to put on cards: 
ab
ab
2ab
3ab 

5ab
6ab
a^{2} + b^{2}
a^{2}  b^{2} 

17ab
9ab
5a
10b 

2a^{2} + b
4b^{2} + a
20ab
12ab 

