All Hands-On: Make a DNA Model!
As part of our genetics studies, we had a parent volunteer to visit our classroom and help us make DNA models. Our helpful mom briefly explained how the different combinations of all traits come from the DNA strands.
She supplied students with chenille sticks: full-size ones and some cut into thirds. We folded two of the short ones together, then attached them to the full-size ones. Finally, we gave it a gentle twist.
It was a great hands-on model of a concept that can be nebulous for kids.