Purim celebrations at Kesher include games, food treats, face painting and costumes. (Photo: Kesher)

Kesher, a progressive Jewish education and cultural organization serving Cambridge for more than two decades, is holding a Purim Carnival from 3 to 5 p.m. Sunday at the Kesher Center for Jewish Learning and Culture, 13 Garden Court, Somerville.

Purim is a Jewish holiday that has come to be celebrated with certain foods (including triangular pastries known as hamantaschen) and an often costumed telling of the Biblical story of Esther and the villain Haman.

The Kesher celebration on Sunday will be a carnival for the whole family with “games created and run by Kesher students, with prizes and delicious hamantaschen for all,” said Laurie Rothstein, interim director of outreach and enrollment for the organization. It will include fresh popcorn, face painting and costumes, and people are encouraged to attend in “wild fancy dress.”

Kesher has a new full- or part-time preschool that uses the Reggio-Emilia philosophy; a day care and K-7 after-school center; twice-a-week after-school activities for K-12 students; and bar and bat mitzvah preparation and event hosting. It is in Garden Court, a small alley off Somerville Avenue next to Conway Park and a large, free parking lot.

The Purim event is $5 per person, with a $20 maximum per family. For information, visit kesherweb.org.