物質、能量和變化
Matter, energy and change
光的特性與相關現象
Characteristics of light and related phenomena
一年級
First grade
知道光照射在不透明的物件上，會產生影子
Know that light shines on opaque objects on, will produce a shadow
在日常生活中，你有留意過在甚麽情況下會看見自己或物件的影子嗎？影子的形狀是如何的？它的大小是固定的嗎？我們試試從以下的探究活動找出答案。
In your daily life, have you ever noticed when you see the shadow of yourself or an object? What is the shape of the shadow? Is its size fixed? Lets try to find out through the following inquiry activities.