Analysis of teaching materials: The teaching content of this chapter is closely related to Chapter 8 and Chapter 9. The connection between the respiratory system, digestive system and circulatory system shows that the human body is an organic and unified whole. Tissues, organs, and systems coordinate and cooperate with each other. This section arranges students to explore experiments "explore the differences in energy stored in different foods", so that students intuitively recognize that energy is stored in food. Through the respiration of cells in the human body, energy is released for the needs of human life activities.
Office Hanger ,Office Coat Hanger,Office Clothes Hanger,Office Clothes Rack
Feat Top International(China) CO.,LTD , http://www.loungefurniture.cn