Use those plastic Easter eggs that can be filled with candy for this lesson. This is a great idea for a center!
Break apart the egg and write the capital letter on the top and the lowercase letter on the bottom half. do this for all 26 letters. Leave them halved and mix them up. Kids sort out and match the capital to the lowercase and snap them back together.

Make a large tic-tac-toe board on the floor out of masking tape. Make it large enough for the students to stand in the squares.

Divide the students into X's and O's. Give each student an index card with their team symbol written on the card.

Teams get in a single file line. Give one student a word to spell. If he/she spells it correctly, he/she gets to choose a square on the board holding up the card for others to see where to stand. If the word is misspelled, the other team gets a chance to spell it correctly. If the next person in line (on opposite team) spells it correctly, he/she chooses a square. If it's misspelled, go back to the other team until it is spelled correctly. Continue play until you have tic-tac-toe, three-in-a-row.