In this video, an extract from an interview, Richard P. Feynman speaks about the difference between knowing the name of something and actually knowing it.
video
Working backward to solve problems
StandardA while ago I stumbled on Farnam Street blog [1] somehow and I am glad I’ve followed this blog. It puts forth really interesting ideas based on the readings of the author. He attempts to “master the best of what other people have already figured out”.
Recently, Shane the author, shared a post [2] with a TED talk on inversion [3]. The summary of the talk is as follows
Imagine where you want to be someday. Now, how did you get there? Retrograde analysis is a style of problem solving where you work backwards from the endgame you want. It can help you win at chess — or solve a problem in real life. At TEDYouth 2012, chess grandmaster Maurice Ashley delves into his favorite strategy.
Classroom physics: free body diagram of Ariane 5
StandardI’ve been recently teaching Physics to 8th graders. We have finished the chapters on motion, forces, and friction, and just covered gravity. As part of this chapter, though not included in the curriculum or book, I introduced the concept of the free body diagram [1]. In the first session introducing this concept, most students didn’t really grab what it is or why it is important.
For the last session before the vacation, I started the class by playing a video of the Ariane 5 [2] launch that occurred on 29 August 2013 of the French Guiana:
Note: if can’t see the video click here.
Ibrahim El Merehbi 
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