2-1 槓桿 1.認識槓桿 2.鐵尺翹翹板 3.槓桿實驗 4.權衡和桔槹 5.槓桿的應用
2-2 輪軸 1.動手做:輪軸實驗 2.認識輪軸 3.組裝輪軸實驗組 4.輪軸的應用
2-3 滑輪 1.動手做:動滑輪實驗 2.認識滑輪 3.動手做:定滑輪實驗 4.滑輪的應用
2-4齒輪 1.動手做:齒輪實驗 2.腳踏車的原理 3.齒輪與鏈條的應用 4.流體傳送動力的應用 5.動手做:利用流體傳送動力
link to https://www.youtube.com/watch?v=4y4IpT-O23o&list=PL1MxReJLAVY-2pl-I0ZQi-Wr3Vx3uCBQ9&index=1link to https://www.youtube.com/watch?v=lllNjw4ihxU&list=PL1MxReJLAVY-2pl-I0ZQi-Wr3Vx3uCBQ9&index=2link to https://www.youtube.com/watch?v=hWbTHHGy_Bk&list=PL1MxReJLAVY-2pl-I0ZQi-Wr3Vx3uCBQ9&index=3link to https://www.youtube.com/watch?v=PXVMuBXm5bE&list=PL1MxReJLAVY-2pl-I0ZQi-Wr3Vx3uCBQ9&index=4link to https://www.youtube.com/watch?v=lllNjw4ihxU&list=PL1MxReJLAVY-2pl-I0ZQi-Wr3Vx3uCBQ9&index=2link to https://www.youtube.com/watch?v=4y4IpT-O23o&list=PL1MxReJLAVY-2pl-I0ZQi-Wr3Vx3uCBQ9&index=1
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link to http://www.uebond.org/ebook-force.htmllink to http://www.uebond.org/ebook-mech.htmllink to http://www.uebond.org/ebook-mech2.htmllink to http://www.uebond.org/ebook-bicycle.htmllink to http://www.uebond.org/appbook/diy/mobile/index.html#p=1link to http://www.uebond.org/ebook-bio.html