I've taught a lot of twins, and can't answer your question, but kind of wonder myself if there's an easy way...............
..........we have girls right now between my class and another. I had them both in Pre-K. They look exactly alike, but there is a weight difference. The difference isn't that slight, really, but slight enough that we often mistake them when in a crowd of children or when they are talking to us and we are just looking at their faces. We mentioned this to their mother, and she said she also confuses them at times, in person and in pictures. She said the dr. said he couldn't tell when they were born if they were identical or fraternal. I taught them together in Pre-kindergarten, and had little trouble then, as one's face was fuller, but by Kindergarten, they regularly switched classes at breaks and lunch, and were usually caught at some point due to their skills being at far different levels. They stopped that when they got in pretty big trouble for it. Now, the faces aren't different at all that I can tell, but one has a bigger belly. Oh, and one is a righty and one a lefty.
I often teach twins. I have had at least one set every single year I've taught. Last year another teacher and I each had a child of three sets. I have never had a pair that were classified as identical. They've either been obviously fraternal.........or only two girl sets (this one and another) that really do look alike but the parents say the dr. didn't know.
Just edited to say, these twins, too, have their own language, which they rarely engage in, but I have heard them do it. They have also been to speech when younger. But, in my experience, this is really common in the twins I've taught.........because they tend to emulate each others' mistakes, they often need speech therapy when very young, and sometimes their "twinspeak" evolves from that, too (at least that's what our speech pathologist has explained to us).
..........we have girls right now between my class and another. I had them both in Pre-K. They look exactly alike, but there is a weight difference. The difference isn't that slight, really, but slight enough that we often mistake them when in a crowd of children or when they are talking to us and we are just looking at their faces. We mentioned this to their mother, and she said she also confuses them at times, in person and in pictures. She said the dr. said he couldn't tell when they were born if they were identical or fraternal. I taught them together in Pre-kindergarten, and had little trouble then, as one's face was fuller, but by Kindergarten, they regularly switched classes at breaks and lunch, and were usually caught at some point due to their skills being at far different levels. They stopped that when they got in pretty big trouble for it. Now, the faces aren't different at all that I can tell, but one has a bigger belly. Oh, and one is a righty and one a lefty.
I often teach twins. I have had at least one set every single year I've taught. Last year another teacher and I each had a child of three sets. I have never had a pair that were classified as identical. They've either been obviously fraternal.........or only two girl sets (this one and another) that really do look alike but the parents say the dr. didn't know.
Just edited to say, these twins, too, have their own language, which they rarely engage in, but I have heard them do it. They have also been to speech when younger. But, in my experience, this is really common in the twins I've taught.........because they tend to emulate each others' mistakes, they often need speech therapy when very young, and sometimes their "twinspeak" evolves from that, too (at least that's what our speech pathologist has explained to us).