Hello, Jennifer.
Below are links to the articles you were seeking. ERIC appeared to only include the abstract and not be able to link to the pdfs as you said. I searched for the journals from the Criss Library home page by clicking the eJournals tab above the search and entering the journal names. This worked for the first two and I was able to find the pdfs through our website.
For the third, I could not find the article citation through ERIC. Instead I did a google search for the title and the pdf was the first item on the list. The links to these pdfs should work, but if they do not you can follow the steps I described to rediscover them.
Good luck on your assignment.
1. ELL preschoolers English vocabulary acquisition from storybook reading by Molly Collins
http://ac.els-cdn.com/S0885200609000489/1-s2.0-S0885200609000489-main.pdf?_tid=a9c39c4a-3663-11e3-b0f8-00000aacb362&acdnat=1381928923_f11a4f114cee04cbd95f5577300c02ac
2. Supporting Math Vocabulary Acquisition by Jennifer M Bay-Williams; Stefanie Livers
http://www.jstor.org.leo.lib.unomaha.edu/stable/pdfplus/41199446.pdf?acceptTC=true&acceptTC=true&jpdConfirm=true
3. What Does Oral Language Have to Do With It? Helping Young English-Language Learners Acquire a Sight Word Vocabulary by Lori A Helman; Matthew K Burns
http://www.pebc.org/wp-content/uploads/2010/01/Helman-Vocabulary-20081.pdf