There are many features and apps that we use in our reading classroom. Ms. McNabb and I use Dragon dictation for our kids that have hearing issues. We tape the directions and they appear on the screen for the students to read. We have some kids that hear only bits and pieces of directions. so, this gives them another way to receive directions.
We also use the Merriam-Webster app to look up unknown words. The free word games such as Word to Word deals with word relationships and helps students understand the different word relationships: synonyms, antonyms, attributes, etc.
Overall, the kids like the fact that they can research something from their desk as a group. Each class completed a research project and took turns using the I-Pad to search the net for info.