Help reinforce upper and lowercase letters + numbers from 1-20 (teens are sometimes toughies for little ones) with an "I Spy" game.
I did "I Spy" daily, as a fun way for my Y5's to practice, as well as a quick and easy way for me to whole-group assess. Teacher starts by calling out a number or letter; students trace it and then raise their hand when they are done. I could tell at a glance who was having difficulty. Play continued with different children taking a turn to choose the number or letter for classmates to find. The worksheet served double-duty, as I'd tell my students to take it home and play again with a family member, this time circling the letter/number.