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Published byVanessa Flynn Modified over 10 years ago
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Lets count the Faces on a cube ©
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Use the letter F for the number of Faces ©
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How many Faces? ©
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F = ©
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F = 6 ©
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Fill in the table ©
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©
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How many Corners? ©
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C = ©
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C = 8 ©
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©
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©
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How many Edges? ©
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E = ©
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E = 12 ©
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©
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©
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Equation F + C – E = ©
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Equation 6 + 8 – 12 = ©
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Equation 6 + 8 – 12 = 2 ©
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©
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A Pyramid ©
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F = ©
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F = 4 ©
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©
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C = ©
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C = 4 ©
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©
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E = ©
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E = 6 ©
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©
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Equation F + C – E = ©
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Equation 4 + 4 – 6 = ©
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Equation 4 + 4 – 6 = 2 ©
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©
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©
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For homework see whether you can do the same calculation for ©
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an icosahedron ©
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and a football ©
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How many Corners? ©
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4 on top ©
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4 on the bottom ©
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1 ©
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1 2 ©
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1 2 3 ©
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1 2 4 3 ©
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1 2 4 3 5 ©
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1 2 4 3 5 6 ©
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