Bar Models
by Anonymous
Draw numbers as bars to compare part and whole, find the difference between two amounts, and work out the missing ? in word problems.
About this app
Bar Models is an interactive elementary math app that represents numbers with bar lengths to explain parts, wholes, and differences. Adjust two parts or comparison bars with stepper controls, then complete four missions in each section. A challenge tab presents bar-model word-problem questions where learners choose the missing value and track their correct-answer streak.
Use cases
- Elementary students practicing addition and subtraction
- Teachers demonstrating part–whole relationships and differences
- Learners visualizing tape diagrams for word problems
- Parents supporting Grade 3 math practice
Features
- Interactive part-and-whole bars with adjustable values
- Four missions for making target wholes and relationships
- Comparison mode showing the difference between two bars
- Challenge questions for finding unknown values
- Reset and next-mission controls with immediate feedback
- Correct-answer streak tracking