科学 · Waves, 光 与 声音 · 9
您的孩子在 9 岁左右正在学习科学中的Waves, 光 与 声音内容，并逐步掌握相关知识与技能。
Your child is learning how light allows us to see objects and how waves work, including exploring different ways to send information using patterns and codes.
您的孩子在 9 岁左右正在学习科学中的Waves, 光 与 声音内容，并逐步掌握相关知识与技能。
Your child is learning how light allows us to see objects and how waves work, including exploring different ways to send information using patterns and codes.