Question Detail

Common Core - CC.2.OA.2 "Add and subtract within 20. Fluently add and subtract using mental strategies." What does Common Core state (or not state) regarding expectations that students achieve this in writing, but also auditorily?

Dec 2, 2017 3:20pm

I have a student in 4th grade (note Goal above is a 2nd grade goal) who has mastery of this goal in writing, but when verbally asked to respond, is not able. Child cannot calculate how much change she should need (basic math) when at the store, or add 10 minutes to the current time on the clock - and in these situations it is not practical to have to go and write it down to calculate answer. I have been told by a few educators that Common Core only expects written (visual, not auditory) mastery. If this is true or not true, reference to where this is indicated in Common Core would be appreciated. Thank you.

  • Math
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    • Feb 10, 2018 8:29am

      I don't know that Common Core is specific about written vs visual vs auditory.

      First off, you might want to dig a little deeper. If you have access to the PAL-Math (Process Assessment of the Learner-Math), it would be beneficial to administer it. This test assesses Look-Say and Listen-Write as there are students who have discrepancies between the modalities. "The Fact Retrieval subtest assesses the math fact retrieval process for two combinations of sensory input and motor output: visual and graphomotor (look/write) and aural and oral-motor (listen/say). Learning to retrieve math facts for four sensory input-motor output combinations may strengthen automaticity of math fact retrieval."(PAL manual, page 94) If your district doesn't own it, you could see if there is a state-wide library that loans assessments. (In Connecticut, we have SERC - State Education Resource Center in Cromwell- that has tests.) If you still can't get your hands on it, make up your own page of 20 facts and see if you notice anything when giving it the two ways.

      Secondly, making change and elapsed time are much more complex skills than finding an answer to addition/subtraction. To begin with, the grade 2 standard above is within 20. That means the largest value in the completed equation is 20. Change involves subtraction within 100 and then, once you find the amount of change needed (ex 35 cents), you have to figure out how to make 35 cents with coins (ie 1 quarter and 1 dime). Elapsed time can sometimes be adding a small amount onto a time, but, again, problems are likely going beyond 20 and some could be wrapping around the hour/o'clock, which adds another layer.