Robert B. Ashlock
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Error patterns in computation: A semi-programmed approach
Ashlock, Robert B
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Error Patterns In Computation: Using Error Patterns to Improve Instruction
Ashlock, Robert B.
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Error Patterns in Computation: Using Error Patterns to Improve Instruction (8th Edition)
Ashlock, Robert B.
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Teaching Elementary School Mathematics Through Motor Learning
Ashlock, Robert B.
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Error Patterns in Computation: Using Error Patterns to Help Each Student Learn
Ashlock, Robert
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