Title: Math Lines Purpose: The purpose of this game is to reinforce compatible numbers sums of 10 to sums of 20. Grade Level/TEKS Reference: 2nd and up (2.3) The student adds and subtracts whole numbers to solve problems. The student is expected to : (A) recall and apply basic addition and subtraction facts (to 18) Length of time necessary for Game: 10 minutes or longer depending on skill level and desire to continue to play Number of Participants: 1 player minimum Source of Game: www.mathplayground.com/math_lines10.html Directions: (1) Students are to form number pairs that add to 10. For example, a ball with the number 8 would pair up with a ball containing the number 10. (2) Each round gets harder and harder Adapted by: Yolanda Pierre-Cribb (2010)