8th Grade Math Christmas Activities & Worksheets | TpT 8th Grade Christmas Activity - Christmas Math Mystery : Zombie Elves CSI by Mrs J's Resource Creations 79 $4.00 Zip Google Apps™ Christmas Math Activity: Math Mystery - Case of The Zombie Elves (GRADE 8) - Engage and motivate your students during math time with this fun Christmas activity!Easy prep! Just Print & Solve!