Fraction Bars
Fraction Bars are a type of mathematical manipulative, developed in the sixties by Albert B. Bennett, Jr.[1] They provide visual illustrations of mathematical operations with fractions[2] to gain better understanding of these operations.
A complete Deck of 49 Fraction Bars.
Overview
Fraction Bars for halves, thirds, fourths, fifths, sixths, tenths, and twelfths form a complete deck. These bars are a part-to-whole region model for teaching the basic concepts of fractions, equality, inequality, addition, subtraction, multiplication, division, and ratios. They are plastic coated so marking bars with water-base pens can be washed off. Fraction Bars are used for teaching fractions in schools and for preparing teachers.
gollark: Random human cells are not a "person".
gollark: You're killing something but it isn't necessarily a "baby", please do not get into this now, etc.
gollark: I can't really be bothered to read this in much detail, but the paper is specifically about poly*gyny* and is apparently not correcting for other factors involved (correlation isn't causation and all).
gollark: In what way? As in, we evolved doing that?
gollark: To be fair, 99% of what people insist is logic in arguments is not actual logic.
External links
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.