This courseware mainly introduces the relative sizes of the Earth, Sun, and Moon. By comparison, it shows that the Sun is the largest, followed by the Earth, and then the Moon. It also introduces the use of scale models and diameter data to understand their size relationships, guiding students to research celestial sizes and cultivating their spatial cognition and research abilities.

Main Content:
1.Exploring the Sun: Understanding Its Size, Distance, and Scale
2.Understanding the Moon: Its Size, Visual Differences, and Relative Proportions
3.Exploring the Sizes of Celestial Bodies: Research Methods and Data Acquisition

This lesson teaches young students to create secondary green by mixing primary colors (blue + yellow), exploring different spring greens by adjusting blue/yellow ratios through theory and hands-on exercises to develop color perception and creativity.

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