Pre-owned and used building toys. Includes the Snap Circuits Jr (SC-100) by Elenco set AND the Thames & Kosmos Electric Generator Hand Crank Powered Tractor learning games. STEM centered building and learning games. These were my daughters games and they have not been used in a long time. It looks like they are complete sets however I did not check these sets closely. She was always very careful with her toys. I have tried to show pictures of the items inside the boxes. Please review photo's and use as part of the description. TAGS: toys, learning, building, stem, science, kinetic energy, electronic, kids, elementary, home school, toys, summer school, elementary, electricity, educational, teacher, teacher Thanks for checking out my items. 23 361 BM B