Last fall I was teaching in a second grade classroom. The district used an online publisher's curriculum. The students would open the program up on their iPads to read the passages and complete digital worksheets. There were also kits the schools could purchase with some equipment to allow hands-on investigations. My students did a STEM project where they needed to design and build a prototype for a specialized bird beak to pick up food items that a specific bird might eat. There was a kit which was used from year to year. But there is a similar lesson plan already written up in the NSTA library.
Here is that lesson plan: https://my.nsta.org/ngss/Resource.aspx?ResourceID=891
There are so many STEM lesson plans at the NSTA website. Best of luck finding one you and your group will enjoy working on together.