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CHAPTER AT A GLANCE
Patterns in Mathematics
•Unit: Patterns (Number System and Geometry)
•Board weightage: Number sequences (odd, even, square, triangular, cube, Virahānka, powers of 2 and 3), relations among sequences and shape sequences give regular 1-mark, 2-mark, 3-mark and 4-mark questions in school examinations (please check your school's latest sample paper)
•Key ideas from the textbook: patterns in numbers, visualising sequences with dots, sum of odd numbers gives squares, adding up and down, shape sequences and their relation to number sequences
•Most scoring part: stating the rule of the sequence in words, finding the next terms, and giving the reason with a picture or a calculation
•Time to revise: about 45 minutes
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