Www.interventioncentral.org Jim Wright, Syracuse City Schools CBM: Math Computation Jim Wright www.interventioncentral.org.

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Presentation transcript:

Jim Wright, Syracuse City Schools CBM: Math Computation Jim Wright

Jim Wright, Syracuse City Schools CBM Math Computation Probes: Preparation

Jim Wright, Syracuse City Schools CBM Math Computation Sample Goals Addition: Add two one-digit numbers: sums to 18 Addition: Add 3-digit to 3-digit with regrouping from ones column only Subtract 1-digit from 2-digit with no regroupingSubtraction: Subtract 1-digit from 2-digit with no regrouping Subtract 2-digit from 3-digit with regrouping from ones and tens columnsSubtraction: Subtract 2-digit from 3-digit with regrouping from ones and tens columns Multiply 2-digit by 2-digit-no regroupingMultiplication: Multiply 2-digit by 2-digit-no regrouping Multiply 2-digit by 2-digit with regroupingMultiplication: Multiply 2-digit by 2-digit with regrouping

Jim Wright, Syracuse City Schools CBM Math Computation Assessment: Preparation Select either single-skill or multiple-skill math probe format. Create student math computation worksheet (including enough problems to keep most students busy for 2 minutes) Create answer key

Jim Wright, Syracuse City Schools CBM Math Computation Assessment: Preparation Advantage of single-skill probes: –Can yield a more ‘pure’ measure of student’s computational fluency on a particular problem type

Jim Wright, Syracuse City Schools CBM Math Computation Assessment: Preparation Advantage of multiple-skill probes: –Allow examiner to gauge student’s adaptability between problem types (e.g., distinguishing operation signs for addition, multiplication problems) –Useful for including previously learned computation problems to ensure that students retain knowledge.

Jim Wright, Syracuse City Schools

Jim Wright, Syracuse City Schools CBM Math Computation Probes: Administration

Jim Wright, Syracuse City Schools

Jim Wright, Syracuse City Schools CBM Math Computation Probes: Scoring

Jim Wright, Syracuse City Schools CBM Math Computation Assessment: Scoring Unlike more traditional methods for scoring math computation problems, CBM gives the student credit for each correct digit in the answer. This approach to scoring is more sensitive to short-term student gains and acknowledges the child’s partial competencies in math.

Jim Wright, Syracuse City Schools Math Computation: Scoring Example 12 CDs

Jim Wright, Syracuse City Schools Math Computation: Scoring Placeholders Are Counted Numbers Above Line Are Not Counted

Jim Wright, Syracuse City Schools CBM Math Computation Activity: Score the number of correct digits on your math probe.

Jim Wright, Syracuse City Schools Trainer Question: What objections or concerns might teachers have about using CBM math computation probes? How would you address these concerns?