Comparisons Chart

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This chart of comparisons can be used with the following questions: “Which line is twice B? Which two added make H? Which line is the difference between F and D? Call A 5; name the others. Call A 6, and name the others.” -Foster, 1921


Ellsworth D. Foster ed. The American Educator (vol. 1) (Chicago, IL: Ralph Durham Company, 1921)


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