I searched them all together by selecting Academic Search Complete, then if you go to the top of the page you can click on "choose databases" and add in the other two to search them all at once. Here's one search that worked well:
You could also do a search on:
childrens literature
indirect teaching
Here's also a link to a book, Readers and writers in primary grades : a balanced and integrated approach by Martha Combs, that you can order from OhioLINK http://olc1.ohiolink.edu/record=b20964419~S0