Tip of the week

Never use calculator

While solving problems in mathematics, physics and chemistry always avoid using calculator. Try to solve 75% of the problem in your mind and then start writing. In chemistry very often we try to use calculator since it involves cumbersome calculations and large numbers like Avogadro's number, value of "R" etc, and similar is the case in physics with planks constant, Stephen's constant etc. Using calculator would hamper your progress with natural approximation techniques that we develop very slowly through years of calculation. Most of the competitive examinations also do not allow the use of calculators.
Ergo, how ever old you are, whichever class you are in, and which ever subject you like, if you are a student then DO NOT USE CALCULATOR unless its specified or theres a way too clumsy problem to be solved.