Learning Resources Letter Construction Activity Set - Theme/Subject: Learning - Skill Learning: Letter Recognition, Alphabet, Mathematics, Uppercase Letters, Lowercase Letters - 3+ - 1 Set Encourage early letter-recognition as children build the alphabet with this colorful literacy activity set. Color-coded pieces allow children to quickly build the letter they see on the math activity cards. Plus, each piece easily snaps together to build both uppercase and lowercase letters. Set includes letter pieces, activity cards and activity guide. Activity set is designed for children ages 3 and up.