Five things to do this week

CATERPILLAR CHECK-UPS at Walter J. Sullivan Water Treatment Facility, 250 Fresh Pond Parkway, Cambridge, on July 30, 1 p.m.-2 p.m. Learn about the lifecycle and migration of a monarch butterfly. Help raise caterpillars to be released as adults, helping a struggling wild population. Information: jcoffey@cambridgema.gov; 617-349-7712.

WALK/RIDE DAY CELEBRATION at Magazine Beach Park, Magazine Street and Memorial Drive, Cambridge, on July 31, 5 p.m.-7:30 p.m. Free. Celebrate the end of the week and month and green commuting. Listen to music by Dinty Childs and friends and community-inspired poetry. See Susan Israel’s “Rising Tides.” Bring a picnic or purchase food from food vendors. Organized by the Cambridgeport Neighborhood Association and Green Streets Initiative. Information: www.magazinebeach.org.

CULTURAL SURVIVAL BAZAAR at The Plaza at Harvard University, 1 Oxford St., Cambridge, on Aug. 1-2, 10 a.m.-5 p.m. Free. The Cultural Survival Bazaar is a festival of indigenous arts, music and cultures from around the world featuring guest artists, traditional and world music. Information: http://bazaar.culturalsurvival.org/the-plaza.

LEARNING TO LOVE THE ARTS at Sennott Park, Cambridge, from 11 a.m.-5 p.m. $8-$10. There will be more than 20 hands-on workshops and activities for children. Participants include Lucy Holstedt, Nubia Williams, Brian Yoon and Brian Wilson.

DANEHY PARK CONCERT SERIES at Danehy Park, 99 Sherman St., Cambridge, on Aug. 4, 6 p.m.-7:30 p.m. Free. Enjoy live music at this family-friendly outdoor music series on selected Tuesdays in July and August. The Wiles will perform. Presented by Passim.