Build the ‘factories’ in the diagram below (Copymaster 1), using square pieces of paper. How many grey squares do we need for the first factory? The second? The third? How many grey tiles will we need for the tenth factory? The hundredth? The 3,298th? What is the number pattern for the grey squares?
Q: How many grey squares do you need for the first factory? A: 1
Q: The second? A: 2
Q: The third? A: 3
Q: How many grey tiles will you need for the tenth factory? A: 10
Q: The hundredth? A: 100
Q: The 3,298th? A: 3,298
Q What is the number pattern for the grey squares? A: Add 1 to each consecutive number.
Q: How many red squares do we need for the first factory? A: 6
Q: The second? A: 10
Q: The third? A: 14
Q: How many squares do we need altogether for the first factory? A: 7
Q: The second? A: 12
Q: The third? A: 17
Q: How many squares will be needed for the fourth factory? A: 22
Q: Show how to make the fifth factory?
WALHT: Identify and solve the rule using problems.
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