How Long, How Many: This is another great game from Marilyn Burns. Each player has a 10×10 grid and a marker. Player 1 rolls two dice and then creates a rectangle of the dimensions rolled on the grid. So if a player rolls a 3 and a 4, then he would draw a 3×4 rectangle or 4×3 rectangle anywhere on his paper. The game continues until one player can no longer fit a rectangle rolled onto his paper. I allow for each player to get the same number of turns, so if the game ends and a player did not get as many turns as the players before him then he can roll one more time. Once the game is over each player adds up the areas covered up on his game board. The winner is the player with the most squares covered. *I do this game a little differently from Marilyn in that I have the kids write the multiplication fact and the answer in each rectangle made. This also makes it easier to add up at the end.

To start out multiplication I always use this circles and stars activity from Marilyn Burns. You will need a die, paper, pen and 2 players. We first divided our paper into 8, but you could adjust for the amount of practice you feel is appropriate. Next, the first player rolls the die. He takes the number on the die and draws that many circles (first example in picture has 3 circles). Then player one rolls the die again and draws that number of stars in EACH circle (example has 1 in each circle since he rolled a 1). He then writes 1+1+1=3. Player 2 has a turn on his own paper. Repeat play until each box is filled in. Meet up in a group again to demonstrate how to convert their addition problems to multiplication. The first number are the circles so for example 1 write 3 since there were 3 circles. Then write x1 since there was one star in each circle. It would be best to show an example with a 1 in it but that is what our game played this time. So have your students go back and write the multiplication sentences to each box. If you want to determine a winner you could have them count how many times they got the larger number in each box or add up all of the products and see who has the highest number.

This entry was posted on October 28, 2012 at 2:52 pm and is filed under Math. You can follow any responses to this entry through the RSS 2.0 feed.
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