Concentration

Our precious wee ones' school was putting on a science fair this afternoon from 3.30. I was working but raced across town and sis headed in too. We were mightily impressed with all the science going on.
Sis is trying to work out how to create a jet propulsion straw using a balloon while L is trying to find the end of the Sellotape to help auntie :-)
Loved both of their expressions so had to collage it