【地理教學經緯度演示模型 產品介紹】
中文學術版：
本地理教學演示模型專為中小學地理課堂設計，采用立體化結構直觀展示地球坐標系原理。模型主體由耐磨損ABS工程塑料打造，以1:8500萬比例科學還原地球形態，表面精確標注經度、緯度網格及重要地理分界線。主體球體直徑32cm，通過可調節支架實現23.5°傾斜角模擬，配套磁吸式晨昏線組件可動態演示晝夜更替現象。
模型配置有雙層旋轉結構，外層透明亞克力經緯網框架與內層地形球體可分離操作，支持師生互動式探究經緯線劃分規律。配備12組可替換標識模塊，涵蓋回歸線、極圈、時區劃分等教學重點，卡扣式設計便于課堂快速切換教學場景。底座集成角度刻度盤與方位指示器，可配合教具進行太陽高度角測算、地方時推算等實踐活動。
該教具嚴格遵循地理課程標準要求，通過觸覺感知與視覺觀察相結合的方式，有效輔助"地球運動"、"地理坐標"等教學難點突破。模塊化設計便于分組實驗操作，增強學生空間思維能力和地理實踐力，配套教學指南含6種標準化課堂活動方案。
English Version:
This geographic coordinate demonstration model is designed for middle school geography classrooms, featuring a three-dimensional structure that visually explains the principles of Earth s coordinate system. The main body, constructed from durable ABS engineering plastic, accurately represents Earth s form at a 1:85 million scale with precisely marked longitude and latitude grids.
The 32cm diameter sphere is mounted on an adjustable tilting stand simulating 23.5° axial tilt. Magnetic day-night terminator components enable dynamic demonstration of diurnal cycles. The innovative dual-layer rotating system combines a transparent acrylic coordinate frame with detachable topographic sphere, allowing interactive exploration of geographic grid systems.
Twelve interchangeable marker modules cover key curriculum elements including tropics, polar circles, and time zones, with snap-on design for quick scenario changes. The base integrates angular measurement scales and directional indicators, supporting practical activities like solar altitude calculation and local time conversion.
Developed in alignment with geography education standards, this teaching aid enhances spatial cognition through tactile-visual learning experiences. Its modular configuration facilitates group experiments and develops students geographic practice skills. The package includes six structured classroom activity guides for effective implementation of coordinate system studies and Earth motion demonstrations.
（總字數：中文278字+英文239字=517字）
