The students will work in teams to swat the number on the board as the teacher calls out which number to swat. The teacher can either call out a specific number or say, "Swat the number that comes before ___." This template is completely editable so you could also use this to review times table, ect.
I used these free downloadable fonts:
DJB The Teacher Font: https://www.teacherspayteachers.com/Product/DJB-The-Teacher-Font-Personal-Use-1435971
KG The Fighter: https://www.teacherspayteachers.com/Product/KG-The-Fighter-Font-Free-for-Personal-Use-349291