Elementary School Pythagoras There were 51 pieces in total. I remember buying about 2 new sets, but I think there might be some missing parts. They said they won't be using it anymore, so I'm putting it up for sale. They used this when they didn't understand 3D shapes and nets in math class. I recommend it because you can learn while playing a game. I'm also including the problem book. It shows some wear, but I think it can still be used. P.S. ... I found the DVD, so I added images 9 and 10. Everything in the images is included. #Pythagoras #EducationalToys #Blocks #Shapes #Math