Dr David Costello (@dr_costello) 's Twitter Profile
Dr David Costello

@dr_costello

Author of #MessingAroundWithMath, #MathematizingStudentThinking, #MakingMathStick and #usingwhatworks. Principal, Speaker, Workshop Facilitator #math

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linkhttps://www.costellomath.com calendar_today21-10-2015 23:54:44

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