The easy thing would be to give them a set of rules to follow.
The easy thing would be to write out a step-by-step procedure or to walk them through the process by modelling it for them.
The easy thing would be to give up when the first attempt fails.
The easy thing would be to only show them one way, the right way, so that as soon as they have a finished product, they move on to something else.
I've never been much into the easy thing.
I provided the materials and a very brief explanation of a picture I saw of an airplane made from circles and straws. They got to work, asking for help to hold materials in place while they taped. We agreed that the hall was a good place to test our first planes.
The first planes flew a short distance but didn't produce a "Wow!" from any of the engineers. We gathered and discussed what we might change. One student thought the first ones were too big, using a full length straw and paper that was cut into 2" strips.
We discussed how we might downsize the first design. We cut straws in half and used narrower strips of paper. We also made the circles smaller. The second prototype didn't produce a "Wow!" either.
We talked about the variables. Yes, that's a big name for a little dog, as my Grandma used to say. But children ages 4-6 are much smarter than most people think. We realised that one variable we hadn't changed was the thickness of the paper. I cut up some old file folders and the young engineers sat down to build again.
We took these planes outside to test. This time, they flew! Some flew really well, and some just, well, flew. A few children ran back into the classroom to add wings, and even tiny straw rocket boosters.
Then I noticed that one JK student had taped her circles onto her straw a bit crookedly. One was pointing up and the other was pointing down. THIS plane flew in a perfect spiral, covering more distance than the others. This was one variable even I hadn't considered!
We then had the opportunity to talk about science, and life, and the mistakes we make that teach us more than the successes. Deep stuff for Kindergarten! But they are ready to come back to the creation station to build again, this time following the design of another student's "mistake".
I'm glad I didn't do the easy thing. Our whole day was full of statements liked:
Can you help me?
I can help you.
I can do it!
I did it!
And the very best statement of all: