Practical Studies of Mater in the Elementary School Attaching Importance to Why Does It Happen?" by Introducing Basic Concept of Particle～

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Many practical lessons which introduce the basic concept of particle, that is, all matter is made of small particles, to the elementary school, and attach importance to why does it happen?" have been effective to bring up scientific thinking-power of children. We developed a new type of lesson to correlate one unit to another, by using the basic concept of particle. We have made a particle-chart as a new teaching material, which will be able to use throughout the studies of matter in the elementary school. We have reported many research and practical data in some science-educational societies, and held an open symposium at the last of this research.