What are these wildflowers? Central Ohio

What are these, Central Ohio, today
http://home.att.net/~rhhardin5/w01.jpg Weed unknown 1
http://home.att.net/~rhhardin5/w02.jpg Daffodil <- I know this one
http://home.att.net/~rhhardin5/w03.jpg Weed unknown 3
http://home.att.net/~rhhardin5/w04.jpg Weed unknown 4
http://home.att.net/~rhhardin5/w05.jpg Weed unknown 5
http://home.att.net/~rhhardin5/w06.jpg Weed unknown 6
I have a Newcomb's Wildflower Guide but I haven't tried anything this early before, generally starting with the mustards around the end of the month.
--
Ron Hardin
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Weed 3 is definitely henbit, and 6 looks to me like periwinkle but I'm not positive about that one. The others I can't identify.
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http://extension.osu.edu / maybe this site will have some idea?

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Thanks to some help, my Ohio Weeds (roadside weeds in time of blooming order) starts
11th
http://home.att.net/~rhhardin5/w01.jpg Weed unknown 1
http://home.att.net/~rhhardin5/w02.jpg Weed Daffodil 2
http://home.att.net/~rhhardin5/w03.jpg Weed Purple Dead-Nettle 3
http://home.att.net/~rhhardin5/w04.jpg Weed unknown 4
http://home.att.net/~rhhardin5/w05.jpg Weed Spring Beauty 5
http://home.att.net/~rhhardin5/w06.jpg Weed Myrtle 6
http://home.att.net/~rhhardin5/w07.jpg Weed Cutleaf Toothwort 7
http://home.att.net/~rhhardin5/w08.jpg Weed Bloodroot 8
http://home.att.net/~rhhardin5/w09.jpg Weed Coltsfoot 9
http://home.att.net/~rhhardin5/w10.jpg Weed Spring Cress 10 12th
http://home.att.net/~rhhardin5/w11.jpg Weed Purple Cress 11
I expect it will get easier at the end of the month because I have several years' of notes in my Newcombs from previous years.
http://home.att.net/~rhhardin/weed.html it will be
corrections solicited
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Ron Hardin
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