Eiji Orii

1909

• Simple science experiments with optical illusions
• Simple science experiments with circles
• Simple science experiments with light
• Simple science experiments with marbles
• Simple science experiments with ping pong balls
• Simple science experiments with starting and stopping
• Simple science experiments with straws
• Simple science experiments with water
• Kurashi no naka no kotowaza jiten
• Simple science experiments with optical illusions, water, straws, circles
• Simple Science Experiments/Set of 8 Titles