The difference between and even and an odd number lies in the fact that one is divisible by two while odd numbers are not. Students will apply skills in division to easily discern if numbers fall in one or the other category. This concept is easy and fun and students will easily learn it through this online game. The zombie board game on even and odd numbers is an interactive online free quiz which can be used to review the concept above. For first grade, second grade, third grade, fourth grade, fifth grade, sixth grade and seventh grade students.