Each of these books offers 10 activities that include clear directions and expectations. Readers might construct an artificial hand, explore surface tension, or create fractal prints. The amount of time needed, a materials list, and the steps for preparation, procedure, and even clean up are listed. A background section explains how the activity works and where it may be seen in the real world, while an “Observations And Results” section explains details of what happened and how to correct any problems. Many of the activities also have additional suggestions to make the experiment suitable for science fair competition. A list of additional resources includes books, websites, and videos for further exploration of topics. VERDICT Especially helpful for their clarity of instructions and use for science fair ideas. This set would also be useful in a STEM lab.