In this in-person workshop, students will work together in small groups to create their own vegetable batteries! After learning about how batteries work, students will use hands-on problem-solving techniques to figure out how to assemble components into a working battery and how to measure the voltage created. Registration is required. When: Saturday, July 23 at 10:00 a.m. Where: Mission Valley Library Price: Free Age: 3rd Grade to 5th Grade Please visit sandiego.librarymarket.com for more information.