swissalgebrahelp.com  
Algebra Fractions ModelsThere are three algebra fractions models: area, linear and set models.
The AREA model
Exercise This is a partwhole exercise. Take the the model 1/2 and 1/4 fractions. Take half of the circle. How many smaller 1/4 parts stay in half a circle? and in the whole circle? Now do the same for 1/3 and 1/6 fractions and 1/5 and 1/10 fractions.
The LINEAR model It is a model which uses a rod or narrow piece of paper divided in equal parts (e.g. you can fold a strip of paper by succesively folding it in half)
Exercise coming soon
The SET model
Exercise coming soon
From algebra fractions models back to the algebra homework help webpage
Source: Elementary and Middle School Mathematics: Teaching Developmentally (7th Edition)

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