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From Karnataka Open Educational Resources
→Concept #4 Place Value
'''Write on the board like this:'''
'''Write on the board like this:'''
[[File:2.png|400px]]
'''III. Fill number line (1 period)'''
'''III. Fill number line (1 period)'''
Draw these one below the other
Draw these one below the other<br>
1,2,.......<br>
1,2,.......<br>
10,20,.......<br>
10,20,.......<br>
100, 200,.....<br>
100, 200,.....<br>
'''IV Tell stories and Play With Number Systems (1 period - optional)'''
http://www.math.wichita.edu/history/topics/num-sys.html#sense
(This page is downloaded and given as reading materials – page is called Number Systems)
'''V Questions/ activities for class'''
#Arrange in order – shortest, tallest, increasing and decreasing order
[[File:3..png|400px]]
#Making numbers
Suppose we have 4 digits 7, 8, 3, 5. We want to make different 4-digit numbers using these digits such that no digits are repeated in each number. For example, you can make 7835 and 3578 but 7738 is not allowed because 7 is repeated and 5 is not used. <br>
a. What is the greatest number you can make? <br>
b. What is the smallest number? <br>
c. Can you write down how you make the greatest number and the smallest number? <br>
Use the given digits without repetition and make the greatest and smallest 4-digit numbers. Note that 0753 is a 3 digit number and is therefore not allowed. <br>
[[File:5.png|400px]]
#Now make the greatest and smallest 4-digit numbers by using any one digit twice.
Hint: Think about which digit you will use twice.
===Learning objectives===
===Learning objectives===
