Number Rack facilitates the natural development of children’s number
sense. The movable, colored beads encourage learners to think in groups
of fives and tens, helping them to explore and discover a variety of
addition and subtraction strategies.
This virtual version of the
manipulative is an open-ended educational tool, ideal for elementary
classrooms and other learning environments that use iPod Touches,
iPhones, or iPads.
FEATURES
• Display 1 to 5 rows of beads, 10 beads per row. On the iPad, display up to 10 rows.
• Hide beads with the resizable shade, which allows teachers or learners to model subtraction or difference problems.
iPad only:
• Reverse the colors of rows 6 to 10 to distinguish (or not) groupings of 25 beads.
• Use the drawing tools to annotate work and show understanding
• Write equations and expressions with the text tool.
MORE APPS
For more Number Rack resources, a web version of Number Rack, and other apps, visit:www.mathlearningcenter.org/apps
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