Visitors of all ages are invited to discover solutions to science and engineering challenges at Science Saturday. This week, learn how batteries and circuits power our world, then make a buzzing Monster Bot! Activities are included in regular admission and free for Hagley members. This is a drop-in activity, feel free to join the fun at any time from 12 to 4 p.m. Use Hagley’s main entrance off Route 141 in Wilmington, Delaware. Science Saturday is presented by Young Conaway Stargatt & Taylor, LLP.