The Rounding Balloon Shop

Dream it, build it!

The Rounding Balloon Shop

The sun is cute and loves deeply Dot's balloons, but his fervent love has jeopardized the safety of the pond. Help Dots to manage the shop and warn her about the imminent danger! You will use air pumps to inflate balloons and represent each value place name and learn the rules for rounding. Connect the pumps together to clearly understand how to carry the extra value to the next pump when reaching a ten. Waste no time and save the pond!

Game ETA

15-20 min

Learning Objective Standards (US)

The game covers the following topics, aligned with the US educational standards.

Id Topic Covered
mc_3.NBT.A.1_1 Place value in base ten groups numbers in bundles of 10’s with each place value being 10 of the prior unit. (10 ones = 1 ten, 10 tens = 1 hundred etc)
mc_3.NBT.A.1_2 While moving to the right across the places in a number the digits represent smaller units.
mc_3.NBT.A.1_3 Rounding to the nearest 10 or 100 requires an approximation of the nearest number with no ones or no tens and no ones, 378 to the nearest 10 is 380, and to the nearest hundred is 400.
mc_3.NBT.A.1_4 Use of a number line to model the closest 10 or 100. X
mc_3.NBT.A.1_5 Rule for rounding the nearest 10 is to determine if the ones unit has a digit that is 4 or below. If so, the ones digit is rounded to 0 and the tens digit remains the same. If the ones digit is a 5 or higher then the ones digit is rounded to a 0 and the tens digit moves up one consecutive number.
mc_3.NBT.A.1_6 If rounding a 100’s number to the nearest 10 the hundreds digit remains the same, unless the tens digit is a 9 and the ones digit is 5 or greater. In that scenario the hundreds digit increases by one consecutive number and the tens and ones are both rounded to 0.
mc_3.NBT.A.1_7 Rule for rounding to the nearest 100 is to determine if the tens unit has a digit that is 4 or below. If so, the ones and tens are rounded to 0 and the hundreds digit remains the same. If the ones digit is a 5 or higher then the ones digit is rounded to a 0 and the hundreds digit moves up one consecutive number.
mc_3.NBT.A.1_8 Rounding to the nearest 10 can produce a hundred if the tens place is a 9 and the ones digit is 5 or greater.

Instructions

The game offers two modes:

  1. Story mode will walk you through the main concepts of rounding off by using a fun pump mechanic where you'll visualize how a value is carried up or down between pumps representing the rounding process.
  2. Rounding Game is meant to practice the rounding process, after you learned how to use the pumps in the story mode. Practicing is a great way to reinforce the topic within your students before they present test, or simply to refresh their knowledge.

Screenshots

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