Boston’s Museum of Science has a new drop-in program, Design Challenges, for grades 4-10 as well as for small family groups.  The program has already received national recognition for creating an environment that encourages girls to explore STEM.  It offers hands-on activities to introduce the engineering design cycle — to design, build, and test a prototype solution to a problem.  Design Challenges are offered daily 10:30AM-12:30PM in the museum’s Gordon Current Science & Technology Center.  The cost is included in the cost of museum admission.  For group visits, contact designchallenges@mos.org or 617 589-0328.