Two math-notebook pages recently authenticated as belonging to Abraham Lincoln suggest the 16th president, who was known to downplay his formal education, may have spent more time in school than ...
A calculator anchors many of the pages, its keypad laid out as rows of small squares and its screen curved into a smile. Beside it you find the measuring tools: a triangular set square with hatch ...
A calculator sits at the center of several pages, its button grid drawn as a neat block of squares that takes a while to fill in. Around it are the tools from a middle school pencil case: a set square ...
CHAMPAIGN, Ill. Two math-notebook pages recently authenticated as belonging to Abraham Lincoln suggest the 16th president, who was known to downplay his formal education, may have spent more time in ...
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