Half-Court Rounding
Subject: Mathematics
Grade Level: 4-5
Objective: The Half-Court Rounding game will help students practice the skills of rounding.
Students will be able to demonstrate rounding to the nearest ten, hundred, and tenth. Students will
also be able to correctly identify rounded numbers to the nearest ten, hundred, and tenth.
Game: Half-court Rounding is a game in which students try to score as many points as possible by
rounding numbers to the nearest ten, hundred, or tenth. This is a perfect game across grade-levels,
because students can choose to shoot free-throws (1 point - round to the nearest ten) jump shots (2
points - round to the nearest hundred) and three-pointers (round to the nearest tenth). Users can try
any kind of shot within the game and have 90 seconds to score as many as points as possible and
beat their opponent. If they answer incorrectly, the student misses the shot. Students can also choose
a two-player game where they can play a friend or classmate.
Common Core Standards:
4.NBT.3 Use place value understanding to round multi-digit whole numbers to any place.
5.NBT.4 Use place value understanding to round decimals to any place.
Warm-Up Activities:
Whether you are teaching rounding to tens, hundreds, or to tenths, students can practice the skills
needed to excel in the game using picture-based math at:
http://mrnussbaum.com/half-court-rounding-practice/ (rounding to the nearest ten)
http://mrnussbaum.com/half-court-rounding-practice-2/ (rounding to the nearest hundred)
http://mrnussbaum.com/half-court-rounding-practice-3/ (rounding to the nearest to the nearest one)
For more formal practice (standardized test simulation), students can visit:
http://mrnussbaum.com/grade_3_standardsround1/ (round to the nearest ten)
http://mrnussbaum.com/grade_3_standardsround100scroll/ (rounding to the nearest hundred)
http://mrnussbaum.com/grade5standards/552-2/ (rounding to the nearest tenth)
Prior to playing the game it is also suggested that you watch the rounding video at the flowing link as
a warm-up for your students. - http://mrnussbaum.com/rounding_videos/
Main Activity:
Students should then practice their skills in a fun way by playing Half-court Rounding:
http://mrnussbaum.com/halfcourt/ (computers)
http://mrnussbaum.com/half-court-rounding-ipad.html (iPads and tablets)
Assessment:
You can assess students using any of the aforementioned online options, or, you can use any of the
five printable worksheets below:
http://mrnussbaum.com/half-court-rounding-worksheet-1/ Which numbers round to 60?
http://mrnussbaum.com/half-court-rounding-worksheet-2/ Which numbers round to 100?
http://mrnussbaum.com/half-court-rounding-worksheet-3/ Which numbers round to 800?
http://mrnussbaum.com/half-court-rounding-worksheet-4/ Which numbers round to 1,200?
http://mrnussbaum.com/half-court-rounding-printable-worksheet/ Rounding to the nearest ten
hundred, and tenths in a “paper” basketball game.