This is my 2nd collection of 50 STEM (Science, Technology, Engineering, & Mathematics) science experiments for kids. Recommended for grades 3 and up. Each one has a snappy title, a brief description of the task required, the rules, and grading rubrics. These are very adjustable for your classroom, home, or homeschool needs. They support learning in these technical fields in a fun, hands-on, and sometimes competitive way. Learn by doing, measuring, and designing, and then reflect upon it. Labs are tagged with categories so you can search for other similar labs. Types of labs included are: arches, cantilevers, boats, catapults, rollercoasters, and many, many more