34th Bolton Brownies’ Science Investigator Badge

The Brownies are a guiding group for girls aged 7-10. They complete challenges and activities in order to earn badges, and one badge they can do is their Science Investigator badge. To get this badge, the girls must complete three science or engineering based challenges and get a visit from a Scientist or Engineer. Last week, I visited the 34th Bolton Brownies to help them finish their badge. After the group had sung the Brownie welcome song, I put on my lab coat and safety goggles to tell the girls a little bit about what I do as a scientist and the importance of scientists and engineers in our


Explaining the importance of Science and Engineering

I then helped the group with the final challenge needed to complete their badge – bridge building! Armed with bags of spaghetti and marshmallows and a help sheet from bexscience.co.uk, the Brownies set about building a bridge that could span a 25cm gap. It proved to be quite a tricky challenge as the gap was slightly longer than the length of a piece of spaghetti, meaning that we needed to join two pieces together to get the length. However, I think the hardest thing for some of the girls was resisting eating the building materials!


Materials for bridge building

After 40 minutes, we had three bridges waiting to be tested. To test the bridges, a girl from each group donned a hi vis vest and a hard hat (safety first with our budding engineers!). Weights were gently placed on the bridges until they collapsed. One bridge had suffered a collision with a Brownie during construction and so could only hold 200g when tested. The other two bridges managed to hold 800g and 1200g, quite an impressive feat for spaghetti and marshmallow constructions!

After a quick clean up, the girls were all awarded their well-deserved Science Investigator badge. To thank me for my help, I was also awarded one which will take pride of place on my lab coat! The girls seemed to really enjoy making (and breaking) their bridges and some of them were really keen to tell me about the vinegar volcano they had made the week before. The Science Investigator badge seems like a really good way to introduce science and engineering to young girls, allowing them to participate in a hands on way that isn’t always possible in a classroom. I was honoured to have been asked to help with this badge and I look forward to any opportunities to help other Brownie units to complete it!


My badge


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