Are proofs difficult? Proof is a notoriously difficult mathematical concept for students. Furthermore, most university students do not know what constitutes a proof [Recio and Godino, 2001] and cannot determine whether a purported proof is valid [Selden and Selden, 2003]. How do you do good proofs in math? There are 3 main steps I usually…
Category: FAQ
What is the best gas station to use?
What is the best gas station to use? 5 Gas Stations with the Best Quality Fuel Shell. The company has been around for more than a century. Costco. You can buy almost anything at Costco and you can do it in bulk. Mobil. For decades, Mobil has been one of the leading suppliers of Top…
Is a flawed diamond worth anything?
Is a flawed diamond worth anything? However, it is rarely worth it to save money by buying a poorly cut diamond: Not only will it look dull and dark, but its lack of brilliance will also make its other defects (such as internal flaws or yellow tints) more visible. Can a flaw be removed from…
How do I pass a pre assessment test?
How do I pass a pre assessment test? Assessment tips Prepare well. Make sure you get a good night’s sleep before the assessment, know where you have to be and what to expect. Know what an assessment entails. Make sure you know what components to expect and what you will be asked to do for…
What factor was the actual cause of the Air France Flight 447 crash?
What factor was the actual cause of the Air France Flight 447 crash? The BEA’s final report, released at a news conference on 5 July 2012, concluded that the aircraft crashed after temporary inconsistencies between the airspeed measurements—likely resulting from ice crystals obstructing the aircraft’s pitot tubes—caused the autopilot to disconnect, after which the crew…
Will asteroid mining be profitable?
Will asteroid mining be profitable? For a commercial venture it can be profitable as long as the revenue earned is greater than total costs (costs for extraction and costs for marketing). The costs involving an asteroid-mining venture have been estimated to be around US$100 billion in 1996. What is Elon Musk’s main reason for space…
How many square feet is a cubic Metre?
How many square feet is a cubic Metre? Cubic meter to Square feet Calculator 1 m3 = 10.7639 ft2 1 ft2 = 2 m3 = 17.0866 ft2 2 ft2 = 3 m3 = 22.3898 ft2 3 ft2 = 4 m3 = 27.1234 ft2 4 ft2 = 5 m3 = 31.4739 ft2 5 ft2 = How…
Can you get Six Sigma certified online?
Can you get Six Sigma certified online? Six Sigma Certification training and exams are done 100\% online, allowing you to study and take the exam when it is convenient for you. Six Sigma certification is designed to prove your proficiency in understanding the fundamentals of this process improvement technique. What is DFSS Certification? The Design…
Are BMWs made of plastic?
Are BMWs made of plastic? BMW wants to use recycled raw materials; metal, plastic, and wood, in all of its vehicles starting in 2025, in an effort to reduce the carbon footprint of its vehicle production. Apparently, Zipse wants BMW to produce the greenest car in the world. When did BMW start using plastic engine…
What color is TiAlN coating?
What color is TiAlN coating? TITANIUM ALUMINUM NITRIDE (TiALN) TiAlN has a coating thickness of 1 to 3 microns and is typically violet-grey in colour. Is TiCN coating good for aluminum? TiCN has good adhesion, toughness, and resistance to chipping and performs well on drills and reamers where moderate temperatures are generated at the cuffing…