A Loop Inside a Loop
Why nesting multiplies the work
About 35 minutesMediumTurtle and Code
What your child can do at the end
Describe the order in which nested loops run
The brief
Put one loop inside another and something surprising happens: the inside loop finishes completely before the outside loop takes a single step. Five rows of four columns is not nine things, it is twenty. Today you watch a grid fill in, cell by cell.
Skills it develops
loops
How it is assessed
3 graded challenges inside the lab, and 6 questions at the end that check the idea rather than the clicks. Every attempt is saved, so a retry after a mistake counts as the learning it is.