Introduction Our study so far has been with numbers and shapes. We have learnt numbers, operations on numbers and properties of numbers. We applied our knowledge of numbers to various problems in o
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Matchstick Patterns Ameena and Sarita are making patterns with matchsticks. They decide to make simple patterns of the letters of the English alphabet. Ameena takes two matchsticks and forms the l
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The Idea of a Variable In the above example, we found a rule to give the number of matchsticks required to make a pattern of Ls. The rule was : Number of matchsticks required = 2n &nbs
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More Matchstick Patterns Ameena and Sarita have become quite interested in matchstick patterns. They now want to try a pattern of the letter C. To make one C, they use three matchsticks as shown i
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More Examples of Variables We have used the letter n to show a variable. Raju asks, “Why not m”? There is nothing special about n, any letter can be used. Let us now consider va
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