Girl Scouts Engineering Day 2007
The girls were following this network on the ground.
They each followed a blue line to an orange square.
Once on the orange square, they compared with their
cohort on the square. The bigger number went right,
and the smaller number went left.
Kindergarteners and first graders sorting (with a little help).
Video
High-res picture
The 4th graders needed a tiny bit of help the first time,
then they ran through it several times with new numbers by
themselves.
Video
High-res picture