Reach for reading grade 1 units 1-8. The word cards include the science, social studies vocabulary was well as the high frequency words.
It does NOT include the spelling words (I have a separate listing for those).
These words are also included in my objectives bundles for each unit so only purchase this one if you are JUST looking for the word cards.
I usually print them out on card stock and laminate them and then put them on my ELA focus wall each week. I take them out when I introduce them and sometimes will put them into a word work center for the kids to manipulate the words or quiz each other on the high frequency words or the vocab definitions