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كيف تجعل مشبك ورق يطفو على الماء

كيف تجعل مشبك ورق يطفو على الماء — Practical science experiments guides from the Kids lane. HowTo: Family Edition: family how-tos that actually help.

How to demonstrate surface tension with pepper and soap · How to make a rocket from a plastic bottle · How to make a balloon powered car · How to make a hovercraft from a balloon and CD · How to make a wave in a bottle · How to build a simple periscope from a milk carton · How to make a kaleidoscope that really works · How to build a wind-powered car · كيف تصنع كراسة رسم مخصصة بنفسك · كيف تنظم مستلزماتك الحرفية · كيف ترسم بالضبط ما تراه