Students can color their alphabet poster all at once, or just one letter at a time, after they have studied/reviewed & mastered recognizing it.
I’ve included a full-page poster, as well as two-on-a-page to conserve paper, and make coloring the letters all at once less overwhelming.
Later, use it again to play an “I Spy a Letter” game. Give children an M&M or other manipulative. You call out a letter and they move their piece of candy on top of it. You can see at a glance who is having diffiuclty.
Continue playing ’til all of the letters have been chosen.
You could also reuse their worksheet to individually assess them for uppercase letter recognition.