Fraction

張貼日期：Apr 25, 2017 12:43:24 PM

等值分數

http://www.mathplayground.com/visual_fractions.html

http://www.mathplayground.com/Fraction_bars.html

http://www.mathplayground.com/Triplets/Triplets.html

fraction scale 分數秤

http://www.mathplayground.com/Scale_Fractions.html

數學遊樂園

http://www.mathplayground.com/math_manipulatives.html