12 videos
【遊び道具】Fun toys
Mr. Denjiro's Happy Energy!
13 videos
【ワザの科学】The science of various techniques
【不思議現象】Mysterious phenomena
19 videos
【古代の武器】Ancient Weapons
10 videos
【音楽の科学】The Science of Music
8 videos
【健康の科学】The science of health
【火起こし】Starting a fire
【地球と宇宙】Earth and Space
【家電のしくみ】How home appliances work
7 videos
【スポーツの科学】 The Science of Sports
【科学マジック】Science Magic
5 videos
【天才！テスラ】The Genius Tesla
【ロウソクの科学】The science of candles
【お家で実験】Experiments you can do at home
Mr. Denjiro's Happy Energy!
Mr. Denjiro's Happy Energy!
