Mary immaculate college lecturer, Maeve Liston will be posting STEM challenges every Monday, Wednesday and Friday at 12. This is yesterday’s challenge.
![](http://www.murroens.ie/wp/wp-content/uploads/2020/03/91399074_10163858199045393_4701918526787551232_o-1024x576.png)
Mary immaculate college lecturer, Maeve Liston will be posting STEM challenges every Monday, Wednesday and Friday at 12. This is yesterday’s challenge.