''Build It! 25 Creative STEM Projects for Budding Engineers'' takes a strictly hands-on approach to science to show how scientific ideas can be applied to real-world situations. The book contains 25 projects with varying degrees of complexity to demonstrate topics such as air travel, programmable machines, light, motion and electricity. The book is designed with the younger scientist in mind, so there is a focus on the fun aspect, with many of the projects involving toys.