Egg Carton Fraction Blacklines
Cynthia Hockman-Chupp | November 8, 2011
Exploring fractions? Short on egg cartons? Although many students will need to experience egg cartons and tile in the third dimension, in a pinch these egg carton blacklines come in handy; students place tile and yarn on the blackline rather than in the egg carton.
one 12-compartment egg carton, pdf
two 12-compartment egg carton, pdf
Egg carton fractions are coming up in Unit 3 (Grade 4) and Unit 4 (Grade 5.)
Comments
Hi Katie,
I took the tops off my cartons. If you keep them on, you can store the tile and string in the carton itself, but I just store them separately.
Enjoy! Cynthia
I just started my egg carton fractions and was wondering if you keep the tops on the cartons or not. My classroom only has 2 small cabinets so space is hard to come by! I was hoping to cut off the tops, but wanted to make sure that I wouldn't mess up any lessons. This is my first year teaching through Bridges. Thanks for your help!
Great idea to make these available for students. It seems they are a nice intermediary step as we press students to move from 3 dimensions to visualize in two dimensiond and eventually completely abstractly. The down side may be that the tiles scoot around the paper a little when jostled but it seems students would adjust. The two-carton paper seem useful for adding and even subtracting fractions. By folding under parts of the egg carton, it seems you could change the carton to a 10 egg carton to deal with fifths, 10ths, etc. to an 8 egg carton to deal with 8ths, etc. and etc. Great idea.
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