I just did this as my science lesson with the third grade classes this week and they really seemed to enjoy it. If you need a measurement science or math activity, hopefully it will work for you too.
Introduce perimeter and area.
Perimeter = the outside edge
Area = the area inside
I like to draw a dinosaur for perimeter and a rug for area to help the kiddos remember. I’m a complete visual learner and a lot of my kiddos are too. A dinosaur for perimeter you ask? I tell the kids (while drawing a super ugly t-rex and occasionally bending my arms into a t-rex-like stance and snapping my jaws) that in Jurassic Park they say “SECURE THE PERIMETER” which means to electrify the fences to keep those dinos in. This might be a completely unrelated way to remember perimeter, but it works for me so hopefully it will work for some of them. It also gives me the opportunity to bend my arms in a funny way and snap my jaws like a shark. 🙂