This kit has almost everything you need , someone has taken great care and thought into putting this together. Granted some things you may have already like scissors and ruler but it is broken into assignment . So user friendly my child can do on his own and has LOVES science.
The kit is not always going to include supplies for more than one child at a time. For example the clay included for Lesson 2 is only enough for one child. We used some play-dough we already had & then traded around. I am finding the pack very easy to use. I am glad I purchased it because it greatly minimizes the "hunting" process for supplies you may or may not have on hand.
Yes, it is expensive, but when you are in the middle of a lesson and hit a "Try This" or don't plan ahead like me, this kit is awesome. Everything in the kit is placed in little baggies labeled for each lesson. There really is very little left to supply yourself. I have used other science kits for this series too, but this is the best by far.
We are so busy each day that I do not make the time for fun experiments very often and then they often don't get completed. As expected, Jeannies books are student friendly and my children are begging for science and experiments. The kit is well worth the money - just in time you will save not having to procure all the peices - excellent resource and excellent value!