The purposes of this study are to revise the class of the experiment type jigsaw method that a researcher suggested from the viewpoint of the practitioner, and to clarify how a child learned by the revised method. The elementary school class contents consist of four experiments about the house environment. The results are as follows : 1) The level of children’s understanding remained unchanged. 2) Children deepened their understanding about the principle by explaining it. 3) Some child grasped the meaning of the explanation, and learned the meta recognition.
https://ror.org/0207r1190 
