Weigh-In Pairs

The gym scale only weighs two balls at a time. Use the pair readings to figure out what every ball weighs, with live needles that show when your numbers match.

Grades 3–8Logic puzzles1–6 players or teamsNo student loginsWorks offline

$5Buy Weigh-In Pairs ▶ Play the free demo

Try it free with your class: the demo runs right in your browser for 8 questions. No sign-up needed.

Or get every game, including all future games, with the All-Access Teacher License for $150.

Screenshot of Weigh-In Pairs in the middle of a game

What students practice

Unknown addends, doubles and halves, pair sums and differences, substitution with three or more unknowns, half-ounce values

Standards

OAS 3.A.2.1 · 4.A.2.2 · 5.A.2.2 · 6.A.3.2 · 7.A.3.1 · PA.A.4.1

Common Core: 3.OA.D.8 · 4.OA.A.3 · 5.OA.A.2 · 6.EE.B.7 · 7.EE.B.4a · 8.EE.C.8b–c

How it works

Open the game file in any web browser: Chromebooks, laptops or your smartboard. No accounts, no student logins and no internet needed once it's downloaded.
Enter the players or teams, then press Start.
Students take turns on one shared screen, so the whole class can play together on a projector or smartboard.
Each purchase includes the game file and a one-page Quick Start guide.