The fourth Wellesley STEM Expo will be held on April 6 at Wellesley High School.  The organizers invite individuals, organizations, schools, companies, and groups to sign up to host an exhibit, run a workshop, or become a sponsor. For more information, email expo@wellesleyeducationfoundation.org.

Genes in Space invites students in Grades 7-12 to a contest to design DNA experiments for space. Five finalist teams will receive mentoring by Harvard/MIT scientists and present at the International Space Station R&D Conference for a chance at the national award.  Winners will attend Space Biology Camp and send their experiment into space. Applications are due April 19.  The contest is free and does not require equipment.  Proposals will be judged solely on their creative and scientific merit.

Framingham State University’s Christa McAuliffe Center seeks presenters and volunteers for the second annual Science on State Street festival on April 27, 11AM-3PM, on its campus (directions).  It’s free and open to all ages, with hands-on activities (in biology, chemistry, physics, food science, robotics and engineering), featured presentations by FSU faculty and invited scientists, conversations and performances that explore the interaction between science and the arts, and planetarium programs.  Sign up now if you’d like to be an exhibitor or volunteer.

Bay State Learning Center (45 Bullard Street in Dedham) is seeking to hire a
“mature, energetic, creative person to help facilitate programs, mentor kids, and/or develop learning plans” — starting as soon as possible through June 15, 10AM-2PM, $35 per hour. Experience working with middle- and high-school students in an educational setting is required. For more information email information@baystatelearning.org. To apply, send resume and cover letter to that address.

The Newton Free Library, in its fifth year hosting the Newton Girls Who Code Club, seeks volunteer facilitator/instructors for this very popular, free, after-school program for Grades 6-12. The Library provides meeting space, and the global Girls Who Code organization provides curriculum materials. The Library usually hosts two sections, each with 20-25 girls and two or more facilitators, meeting on Mondays, 7PM-8:30PM. Facilitators do not need technical experience and may learn alongside Club members. They need a passion for closing the gender gap in technology, skill in fostering community in youth groups, and the ability to volunteer 3 to 4 hours per week through May (including preparation and travel). Men and women are encouraged to apply. If interested, read this description and email mcoffey.ntn@minlib.net if you have further questions. Apply here.

Code Ninjas (161 Linden Street in Wellesley) will host a Grand Opening on January 5, 10AM-2PM, with games, prizes, and tours of its center where kids can learn coding by building video games. RSVP here. For more information, contact Annie Duong at 781-591-2413 or annie.duong@codeninjas.com.

STEM Inspiration Organization (S.I.O.) will host a free STEM workshop for high-school students — The Complex Task of Reading Scientific Papers — on January 12, 3PM-5:30PM, in Waltham. In this workshop focusing on biology and neuroscience, a researcher will teach students skills usually taught in college for analyzing professional journal articles. To register, go here, then click on “Sign Up,” then click on “3:00PM,” then click on “Next,” fill out the form, then click “Book It.”

S.I.O. is composed of high school students from many towns in Metrowest Boston. As a non-profit organization, S.I.O. aims to engage community members in STEM topics to further their understanding and to inspire students to consider careers in STEM fields. For more information, email contact@steminspiration.org.

Esri invites students in Grades 4-8 and Grades 9-12 to question, explore, and analyze data for a situation in Massachusettts and then share their results in a Story Map to be submitted to the Massachusetts ArcGIS Map Contest. Schools or youth organizations can register for an ArcGIS bundle that includes an account needed for submitting student entries. Register by April 29 and submit up to 5 maps per school by May 3. The top 5 maps from the Massachusetts competition will move on to the national competition. Email Ann Witzig at aswitzig@gmail.com for more information.

Unruly Splats! are programmable floor tiles for kids to start playing games pre-loaded onto a tablet (not included) and progress into coding their own active games. They were created by a Boston-based start-up and are now available with free shipping and a 10% discount when you use the code Email10. The Unruly team says, “We are not interested in putting another boring and fragile science kit out on the market or in providing kids with a frivolous toy.”