This Book Is Part of the GEMS ( Great Explorations in Math and Science) Series put out By the Lawerence Hall of Science , University of California Berkeley. This book Is for Grades 1-3, though I find it could be used in Pre K and K as well. These books are pretty complete in their Project Descriptions including amount of time each project takes and results that should be achieved/noticed. this book has only 5 Activities but also has a lot of helpful info including Literature Tie ins. This is considered to be a teacher Guide.
This one is great for Homeschool, Public and Private school teachers and can also be useful for Daycare and after school Providers as well.