激發好奇心， 電動蜂鳴器 3 活動套件！孩子們將在建造自己的發電機、蜂鳴器盒和警報器的過程中，學習電力和電路的基本知識。
內容物：
小型工作台和連接彈簧
蜂鳴器、支架和開/關開關
塑膠膜、線和說明書
艾因歐教授的「我知道」指南
學習與探索：
動手實驗：蜂鳴器盒、警報器、簡單電路
關於電力、磁鐵和摩斯密碼的教育資訊
逐步說明，打造你自己的蜂鳴器系統
適合 7 歲以上的小小科學家！
We bought this for a rainy Sunday activity and my daughter had the buzzer box working in under 20 minutes. I really like that the instructions taught her about closed circuits in a hands-on way.
My 7-year-old had the generator wired up in about 15 minutes, and the buzzer box was even more fun to assemble. Seeing his face light up when the alarm actually worked was totally worth it. The instructions were clear enough for him to follow with just a little help.