Question Detail

what is good way to teach rounding to 3rd graders

Aug 27, 2014 5:28am

where can you find common core resources free with stories for place value

  • Behavior / Class Culture / Collaboration / Common Core / Engagement / Planning


  • You must sign in before we can post your answer.
    Don't have an account? Sign up only takes a few seconds.

    • Mar 17, 2015 5:37pm

      There are a couple of good videos from mathcoachinteractive on YouTube.

      MathCoachInteractive also has a 6-step demonstration lesson. (you need to sign up to get there, but it is free).

      The best classroom demo I've seen was modeled by a terrific Grade 6 teacher. Display the 3-digit number to round, e.g., 347. Have kids stand with their arms outstretched to make a number line (their head is the midpoint). Name and label each hand with a benchmark number (340 and 350 if rounding to the nearest ten; 300 and 400 if rounding to the nearest hundred). Now kids estimate the position of 347 on the number line, and determine whether it is greater than or less than half-way between the two benchmark numbers. Their outstretched arms will tilt in direction toward which to round, kind of like a seesaw.