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THEORIES OF LEARNING
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abacus abstract answer apples base frequency basic facts basic problem type basic type child Class column addition common fractions comparison computation concept counters counting decimal bases decimal fractions decimal geometric decimal point decimal system denominator division examples divisor drill Elementary School Journal employed equal addends equals A TR.A example structure example type finding the difference fingers Florian Cajori functional processes geometric progression grade Group hundreds hundredths identical illustrated incomplete end pattern integer larger long division mastered match-counting matching Mathematics meaning memorized minuend mixed decimal multiplicand one-step problem partial dividend partial product pebbles principle problem situation process patterns quantity RA TR.A RA RA.A ratio relationship reversed division scale smaller subtraction symbols system of notation tally tally marks taught teacher teaching tens tenths term tion TR.A RA RA TR.MA transfer of learning transformation two-step problem Type 14 Type 23 understand units vigesimal whole numbers write Yearbook zero