On Monday, February 16,  the Leventhal-Sidman JCC (333 Nahanton Street) will present Garry Krinsky in his show, Toying with Science, with performances at 11AM and 1PM.  The event is for children ages 4-10 accompanied by an adult and is part of the JCC’s Magic Ark performing arts series for families.  It’s filled with circus skills, mime, comedy, original music, and audience participation.  A study guide (PDF) is available to help parents or teachers prepare children for the performance.  Tickets are $13 (JCC members $11) and available online or by phone at 617-965-5226 or 866-811-4111. .