MLC Number Rack
This app has not yet been evaluated against our instructional invariants. The analysis below is based on independent research.
About
Number racks (also known as rekenreks) facilitate the natural development of children’s number sense. In the Number Rack app, rows of movable, colored beads encourage learners to think in groups of 5s and 10s, helping them to explore and discover a variety of addition and subtraction strategies. Display up to 10 rows, each with 10 beads, to work with numbers up to 100. This virtual version of the manipulative is an open-ended educational tool, ideal for elementary classrooms and other learning environments that use laptops, iPads, or Chromebooks. The number rack is a key component of Bridges in Mathematics, second edition.
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For MLC Number Rack
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