Promoting Mathematical Thinking
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        • Reasoning Without Arithmetic
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Applets

Picture
Reasoning without Arithmetic
Number Formats
Reasoning about numbers
​Reasoning about graphs of functions
Fractions & Decimals
Polynomial Studies
Structured Variation Grids
Sundaram Grids
Calgary Grids
Polygonal Projections
Related Polygons
Animated Situations
Outer to Inner Area ratios
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