Math Intervention 3–5 Grade

66 Addition and Subtraction Concepts

Hundred Chart Tic-Tac-Toe

A game designed to build the concept

of adding and subtracting tens

Materials:

Q^ Markers or crayons

(different color for each player)

Q^ Paper

Directions :

1. Each player decides which color marker/crayon to use.


2. One player draws a tic-tac-toe board on the paper.


3. The fi rst player writes a 2-digit number in one of the
   spaces.


4. The next player uses adding or subtracting ones or
   tens to write a related number in one of the spaces.
   The placement of numbers is relative to position on
   a hundred chart.


5. Players take turns fi lling in related numbers.


6. The winner is the fi rst player to have three numbers in
   a horizontal, vertical, or diagonal row. For example:

Content Differentiation :

Moving Back: Use a hundred chart as a reference. Or

draw a large tic-tac-toe board and place base ten blocks

on the board to represent the numbers.

Moving Ahead: Make a tic-tac-toe board with more lines

and try four in a row.

PLAYERS:

2