I’m sure you could DIY this Phases of the Moon memory game, but as much as I’m a crafting homeschool guru, I take full advantage of pre-assembled kits to make doing these kinds of projects easy and fast. There are certainly benefits to making things on your own. I’m sure the children would be far more attached and proud of a project they did completely on their own from scratch, but when the point of a project is to do a hands-on activity, and you’re not much of a DIYer, then the kits from Nature-Watch are a win! They come with all the materials you need to do the project as well as additional educational material for the teacher to use with the classroom. I prefer getting the classroom kit rather than the individual kits as the price is better and it gives us the opportunity to do the project again. But, in this case, it would have been better to just buy the individual kits. We have a lot left over to share with other homeschooling families. The classroom kits come with supplies for 25 students plus additional supplies for the teacher (like books, samples and booklet with info). The classroom kits range in price but end up costing about $1.50 per student. The Individual kits are about $6 a person. They do offer a homeschool kit with multiple projects in one kit.