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Odd One Out, provided by RISPs, helps students focus on mathematical properties to determine which of three numbers or expressions is the odd one out.
For example, given the triplet 2, 3, 9:
2 could be the odd one out because it is even and the others are odd.
3 could be the odd one out because it is the only triangle number.
9 could be the odd one out because it is composite and the others are prime.
This activity allow students to explore more complex triplets such as: sin x, cos x, tan x
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Odd one out (teachers' notes) 230.34 KB
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Odd one out 264.04 KB
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