I wanted to share a couple of my FAVORITE learning apps for elementary children (primarily ages 4-8) with a few of you as I have been in discussion with some of you regarding these. These are our FAVORITE. Not only do we love them, but they are incorporated every single school day in our home. They have taught my kids wonderful things, and we think they are a GREAT tool!
The first is LEARN WITH HOMER. It is my FAVORITE! You can try it for one month for FREE so I suggest that even if the $8 a month isn't in your budget, you try it for free! It has won all kinds of awards and is perfect for ages 4-6. You can also do this one right on the computer. This has two major "sections." The first is one for learning to read. The second is for learning great subject matters (the incas, health, different animals, etc.)
The second is Teachme. Here is the link to the second grade one but you can start with toddler, preschool, K, 1, etc. This one is very cheap ($2 per grade) and you can have multiple kids on each grade level. We do this every day for 15 minutes to refine skills when I just need a break from direct teaching. This app does a little bit of math, reading, and writing and is definitely worth the money.
And then there is REFLEX MATH. Here is a link to this one! This has been the BEST thing we have done Math-wise. It says it is for grades 2-8 but I totally disagree and think you can start it with K or probably 1st grade. It basically provides games to DRILL math facts. It is set up for kids to get on and do themselves for 15 minutes each day. It gives them a green light when they are done for the day. You can do a 14 day trial. After that it is $35 for a year. This program has brought my children's math facts to a great place. (There is an add/subtraction option and then multiply/divide) option.
And my last all-time favorite is Stack the States (or the follow-up Stack the Countries.) I cannot begin to say enough about this game and what it has done for my kids geography. They love it and have learned SO much. We have also used this site online with great success. This one is also very cheap -- and you can buy a lite version to try it for free. Your children do need to be able to read to do this one.