Good for younger kids (1st and 2nd graders)
590211
Good for younger kids since these puzzles only apply addition and subtraction.  For older kids, a different book with more challenging puzzles will be better
2119870
This book is good for younger children (about 4 years to 8 years) -- there are several landscape scenes and then the stickers that are removeable help create story lines on the landscapes.  This is one of those "create your own scene" with stickers of all kind.  Good for imaginative play because the kids aren't "stuck" with one scene.  They can move and remove the stickers according to their whims.  Nice stury book, too.
2732867
Great for younger kids.  Good interactive and simple fun.
582264
This is a good book for younger kids, as the older ones might actually try to guess the breed and think the questions not really good hints. But definitely good for my  5, 4, and 2.5 y/o. My 2.5 y/o asked to be read this book every night. He will literally pitch a fit if I don't read it to him.
512529
I have four kids: ages 3-8, so we were right in the target range of this reading program.  For your money you get access to a 1 year subscription to their reading activities.  You can run it off just about anything (PC, Mac, tablet) but we stuck to a good old fashioned PC.

Our kids have just started on this and they are (so far) interested and engaged.  Your typical 3 year old is going to need help with this, but beyond that most kids can handle this pretty well.  Our 7 year old is a really strong reader and he isn't getting much out of it, but I can see where this would have helped his older brother a lot when he was younger.  Regardless of whether they are learning anything, all my kids like to play with it.  I think the "optimal" age for this is 4-6.  Old enough to be comfortable following along with the rules and with enough attention span to follow through with it.

There are a ton of activities, so I can see it being worth the price.  Still as a yearly price it's not cheap, and it's not obvious looking at this page that you are only buying a subscription.  This package also includes a story book but I'm not sure it's worth the extra $20.

Overall a good product and certainly a far better use of screen time than just sitting in front of a TV.  If you've got a 4-6 year old who's not that driven to read this might help get them jump started.  If you've got a 7 year old who is struggling with reading, by all means try this out.  If your child is already a strong reader I'm not sure you are going to get a lot out of this, but again, there are worse ways they could be spending their time.
3586459
All the Emberly books are worthwhile, and this one is definitely skewed toward the younger side of the 4-8 age group.  Even younger than four will enjoy this.  If they can hold a pencil and draw dots and lines, they can make drawings. In fact, younger kids might enjoy just making the thumbprints and watching you turn them into people and animals.
Older kids may grow tired of it quickly but that's okay, becuse the Green, Orange, Red and Purple Emberly books are for them!
1485405
Written for young experimenters, I would say 4th to 6th grade, or even 3rd grade with parent coaching.  Quality of parts is OK, not great but adequate. Instruction book is colorful and easy to follow. A bit too elementary for my recipient and it was not so easy to discern age/maturity level the set was aimed at before buying, hence 4 instead of 5 stars.
3798205
This books seems to be a good review of kindergarten, some lessons are slightly more advanced which is a good challenge. My daughter has enjoyed it, but my son is more resistant to do it everyday. As of week 4 the Friday exercises have not been as "fun" as hoped. I was hoping for more puzzles or word games on Fridays, however, I haven't checked the upcoming pages. Overall it seems like it is good prep for 1st grade.
184654
My son is in 3rd grade and taking off in reading. He is reading the Harry Potter books on his own, but at bedtime he wants to read with me and he is tired and doesn't want to read something too difficult. We like the shorter books for bedtime so we can finish them in a few nights. These Meg Mackintosh books are fun to read and try to figure out the mystery before she does. We generally read one book in 2 or 3 nights. Wish there were more because we just finished the last one and passed them on to a friend. Most 2nd-4th graders can read them on their own. Younger kids can read them with help or have them read to them. Illustrations are simple and we like to try to find clues in the illustrations.
4667776
Fun and festive look and find book. I didn't pay attention to the reading level as I was buying, so it was a little young and too easy for my second grader. Perfect for younger learners, though.
4250156
I'd recommend this book for the 2 and under. The illustrations are charming, the story is short and sweet for the tinies but not engaging or mentally challenging enough for the 3+ crowd.
1629008
Cute book great for an older kid (2nd or 3rd grade) learning cursive or a second level book for younger children who started earlier.

The only thing I don't like is the font they used. A few of the uppercase letters aren't standard cursive they're closer to the print version of the letter. And that's the reason for 4 stars.
3218715
I bought this for my Kindle for my inquisitive 31month old daughter as she likes to 'read' it so thought I would load some books on it for her.

A straightforward childrens book with good simple pictures that fit the kindle well.  I found that the story did not hold her interest as well as other childrens books she had but I don't think the age is the issue as she has other similar books of this age range that she loves.

Overall a fairly good kids book.
3680450
This chemistry kit was enjoyed by my two older kids, ages 7 and 5, quite a bit. I felt that it was rather simplistic for the price, and the directions were overly wordy. Additionally, it's not actually NINE experiments, there are maybe four actual experiments (its been a couple of weeks since we did this, my memory is failing me here) and the rest of the "nine" are simply small twists or suggested idea to explore a little further within the existing experiments. Not a big deal, as what we were able to do was fun and educational for the kids, but felt a bit like a minor rip-off. Still, this kit was great fun for my kids, so it was well worth the time we put into it.
1966983
I like the ungame #1 great price, #2 it is worth every dime, #3 it is a great way to get kids involved who otherwise would not. It's not great for slow readers, and it is not great for children 6 years and under. Other than that, it was a good purchase.
3193811
The book is a little long for beginning of the year first graders, and not as engaging as I would like for little ones. It is important to teach children how behaving in school is different than home behavior. In that aspect, it is a good tool.
2933983
This is a nice, simple "game". It is really more of a game version of flash cards, but it keeps my pre-k daughters interest. It makes learning spelling and letters more fun. I would not recommend for kids older than kindergarten.