This is a Science Alphabet Flash Card pack where each flashcard has both the Upper and Lower case letter followed by an image and the word.
There is also a "cover" card that says "A-Z Science Vocabulary"
For the set that I have for my students I cut out each card and glued them onto a 3.5x5" index card, laminated them and then attached them together with a binder ring.
Here is a listing of the words covered:
I- ice age
J- jurassic period
Y- y chromosome