Group Activity Cards
Geometry
Use groups of 3.
Materials: Index cards, spinners, grid paper, colored pencils

Triangle Demolition Derby 
Copy onto cards the vertices of triangles shown below. Shuffle the cards and place them face down in a pile. Label equal sections of two spinners "4," "3," "2," "1," "1," "2," "3," "4." Decide which spinner names xcoordinates and which spinner names ycoordinates.
Each group member selects a card from the pile and graphs the triangle described on the same coordinate plane using a different colored pencil. Then, in turn, each group member spins both spinners and uses the resulting ordered pair to translate his or her original figure. (The xcoordinate of the ordered pair tells how many units left () or right (+) to move each xcoordinate of the vertices. The ycoordinate of the ordered pair tells how many units down () or up (+) to move each ycoordinate of the vertices.) If your translation touches or overlaps with another group member 's translation, award yourself 1 point.
Repeat the procedure several times, reshuffling the cards when necessary. The group member with the most points wins.
Vertices to put on cards:
