Here are the readings from the Revised Common Lectionary for next Sunday, the third Sunday of Advent

Isaiah 61:1-4, 8-11
Psalm 126 or Luke 1:47-55
I Thessalonians 5:16-24
John 1:6-8, 19-28

http://www.library.vanderbilt.edu/divinity/lectionary/BAdvent/bAdvent3.htm

Denominational variations:

ACC: http://www.montreal.anglican.org/comments/badv3m.shtml
ECUSA: http://www.io.com/~kellywp/YearB/Advent/BAdv3.html
ELCIC: http://www.worship.ca/text/wpchb0506.pdf
ELCA: http://www.plu.edu/crel/wordlink/next-weeks.html
UCC: http://www.ucc.org/worship/samuel/s05.htm
RCC: http://www.word-sunday.com/Files/B/3-Advent-b/A-3Advent-b.html

Collect (ECUSA):

Stir up your power, O Lord, and with great might come among us; and, because we are sorely hindered by our sins, let your bountiful grace and mercy speedily help and deliver us; through Jesus Christ our Lord, to whom, with you and the Holy Spirit, be honor and glory, now and for ever. Amen.

Sunday-school Lesson plans:

http://www.sundayschoollessons.com/adv4es.htm ()
http://www.sundayschoollessons.com/advm3les.htm ()

Younger Children: http://www.episcopalchurch.org/documents/Third_Sunday_of_Advent_Younger(1).doc
Older Children: http://www.episcopalchurch.org/documents/Third_Sunday_of_Advent_Older(1).doc
Adults: http://www.episcopalchurch.org/documents/Third_Sunday_of_Advent_adult(1).doc

http://Logrus.ca/HomeChurchWeb/LectionaryStudy.html

Sunday-School Crafts:

http://www.sundayschoollessons.com/adv3kmart.htm (Isaiah)
http://www.sundayschoollessons.com/adv3kart.htm (Psalm)

http://www.sermons4kids.com/

Pew-work

http://www.efree.mb.ca/lectionarypuzzles/in-bwag.htm#ad1
http://Logrus.ca/HomeChurchWeb/Pewwork_adult.html
http://Logrus.ca/HomeChurchWeb/Pewwork_middleschool.html
http://Logrus.ca/HomeChurchWeb/Pewwork_elementary.html
http://Logrus.ca/HomeChurchWeb/Pewwork_preschool.html