Competent children, learning from each other; by Elizabeth

T has been creating butterflies by painting, and folding the paper to create symmetric images .  

D sees this, and asks how he has made them.  

 They sit down together.

 First, you make the picture.

 You fold it over.

Then you do tap, tap, tap!

That's it! 

 T hands a piece of paper to D. 

They continue working together.