Computers are playing an increasing role in education. The use of computers in edu- cation is referred to as computer-assisted instruction (CAI). Write a program that will help an elemen- tary school student learn multiplication. Use the random module to produce two positive one-digit integers. The program should then display a question, such as How much is 6 times 7? The student then types the

Question

answer. Next, the program checks the student’s answer. If it is correct, print the string "Very good!" on the screen and ask another multiplication question. If the answer is wrong, display "No. Please try again." and let the student try the same question again repeat- edly until the student finally gets it right. A separate function should be used to generate each new question. This method should be called once when the program begins execution and each time the user answers the question correctly. [Hint: To convert the numbers for the problem into strings for the question, use function str. For example, str( 7 ) returns "7".]

What will be an ideal response?

Answer 1

```
# Test a student's knowledge of multiplication.

import random

# generate a random one-digit positive number
def generateNumber():
return random.randrange( 0, 10 )

# generate a multiplication problem
def generateQuestion( a, b ):
return "How much is " + str( a ) + " times " \
+ str( b ) + "?"

wrong = 0 # is answer correct?

while 1:

if not wrong:

# generate problem with answer
number1 = generateNumber()
number2 = generateNumber()
answer = number1 * number2
question = generateQuestion( number1, number2 )
wrong = 0 # return wrong to false value

print question

response = raw_input( "= " )

if response == "q":
break

if int( response ) == answer:
wrong = 0
print "Very good!"
else:
wrong = 1
print "No. Please try again."
```
How much is 6 times 4?
= 24
Very good!
How much is 5 times 1?
= 5
Very good!
How much is 8 times 4?
= 12
No. Please try again.
How much is 8 times 4?
= 32
Very good!
How much is 9 times 3?
= q