Thank you for viewing. I originally purchased these used for my children. Therefore, there are fine scratches, marks, and discoloration due to aging. Please check the photos. Would these be suitable for science projects, etc.? I would like to sell these to someone who doesn't mind the details. Please understand that these are used items and consider purchasing them. When shipping, I plan to put them together in an OPP bag and send them with simple packaging. Thank you for your understanding. "Let's Try It Before Age 10: Easy and Exciting Science Play" Shinichiro Yamamura Price: ¥1500 "Let's Try It Before Age 12: Science Experiments Full of Discoveries" Shinichiro Yamamura Price: ¥1500 #ShinichiroYamamura #Shinichiro_Yamamura #book #nature/general