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Art of Problem Solving Beast Academy 1A Guide and Practice $27 : Counting: Keeping track, recognizing small amounts (subitizing), grouping, ten frames, hundreds charts. Shapes: Names and properties, rotations and reflections, combinations and dissections, polyominoes. Comparing: Equal amounts, matching (correspondence), symbols (=, <, and >), ordering within 100, comparing length and distance.

Art of Problem Solving Beast Academy 1A Guide and Practice