Acera School (5 Lowell Ave, Winchester) will host its Math Festival on Sunday, April 7, 10AM to 12PM for students in Grades K-12. It’s a free event of math and logic-themed games designed to inspire creative reasoning and collaborative problem-solving. Parents/guardians with their kids are all welcome — and invited to bring friends. Register online.

Math challenges include: Algebra on Squares, Chocolate Fix, Game of Amazons, Hexahexaflexagons, Jumping Frogs, Jumping Julia, Mosaics, Rook’s Move, Skyscrapers, and Tower of Hanoi.