About terrestrial gravity
  A sergeant explains to young soldiers a gist of Earth gravity:
  
  -  If to throw a stone upwards, then it drops to the ground. This means, that the terrestrial gravity effects it.
  
  One of the soldiers asks:
  
  -  What if it drops into water?
  
  -  It doesn’t refer to us. This problem is considered by fleet.
  
 
At exam
  An examiner asks a student:
  
  -  What is your name ?
  
  -  John Smith, sir.
  
  -  Why do you smile ?
  
  -  I’m satisfied with my answer for the first question.
  
 
An excellent work
  A teacher returns a pupil his work:
  
  -  Not a single mistake was made! Johnny, tell me honestly, did  anybody help your father ?
  
 
Valid reason
  A teacher asks a pupil:
  
  -  Why does your father make home tasks for you every day ?
  
  -  Because my mother is always busy.
  
 
Study, sonny
  -  Dad, I’m expelled from the college.
  
  -  Don’t weep, I’ll buy you a new college.
  
 
School’s news
  -  Were you asked at school today ?
  
  -  Yes, I was.
  
  -  What about ?
  
  -  Why are you always absent at the parents’ meetings ?
 
Business-like conversation
  -  Uncle Bill, I need to tell you something.
  
  -  Well, but tell briefly and clearly.
  
  -  100 dollars, please.
  
 
General disaster
  Two boys went to a doctor.
  
  -  What do you complain about ? – the doctor asks.
  
  -  I swallowed 50 cents. – one of  the 
boys answered.
  
  -  And why do you weep ? – the doctor asks 
the other boy.
  
  -  This is my money.
  
 
Fast calculation
  A teacher asks:
  
  -  Tommy, find please a sum of these two numbers.
  
  -  But I didn’t lose it, sir.
  
 
About inertia
  -  Johnny, give an example of inertia.
  
  -  A car has stopped, but a driver is 
going farther.
  
  
  -------
  
  
  -  What is an inertia force ?
  
  -  A ball is flying to a window and it’s 
impossible to catch it.
  
 
An essence answer
  At an arithmetic lesson a teacher asks:
  
  -  How many will it remain, if to subtract 1 
from 100 ?
  
  -  Two zeros.
  
 
Fast solution
  A teacher of mathematics writes an equation on a 
blackboard and calls a pupil:
  
  -  Billy, find
  
   x
  
  please.
  
  -  I have found, here it is! – the pupil answers 
and shows to
  
   x
  
  with a finger.
  
 
Working week
  -  A cow gives 20 liters of milk a day. How many 
liters of a milk  is it possible to get for a week ?
  
  -  But we don’t know, how many days a week a cow 
works.
  
 
Physics news
  As it’s known, the famous Albert Einstein tried 
to solve the problem 
of time-space unity during last twenty years of 
his life and didn’t 
solve it. However this problem was solved 
recently by sergeant Brown. 
He drew up a platoon of soldiers and ordered 
them to dig a ditch from 
fence till dinner 
hour.
  
 
New in geometry
    -  How is the biggest side in a right-angled 
triangle called ?
    
    As all the pupils keep silent the 
teacher begins to help:
    
    -  Hy-po-…
    
    -  Hippopotamus !
    
   
New definition of fraction
    A teacher of mathematics:
    
    -  If to take one tomato and to cut it by 
4 parts, then each lobule is one
fourth part of a tomato. Now do you understand 
what is a fraction ?
    
    -  Yes, it is a part of salad !