These five apps can help middle school students learn math skills such as geometry, estimation, and simple algebra

Here are reviews of five high-quality digital apps that can help teach middle school math, courtesy of Common Sense Media and its new Graphite service—a free database of teacher-written reviews of learning technologies.
Slice It!
Grade range: 3-7
What is it? Divide and conquer with clever puzzles that build a geometry foundation.
Pros: Trial-and-error game play supports nimble discovery of concepts and strategies.
Cons: Lacks explicit connection between game principles and classroom learning.
Bottom line: A fun way for kids to jump into geometry with lessons on shapes, symmetry, and area.
Full review: http://www.graphite.org/app/slice-it
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