iPod apps (iTool 10)

So, I am posting out of order. I like to mix things up a bit, at times. I liked the pdf listing apps for possible education use. I ended up downloading quite a few apps to my ipod touch. the Math Missing Numbers game would be a fun game for primary students. It has addition, subtraction, multiplication, and division. There are also different levels that kids can choose from. Can you say, "Differentiation?"