Below are some wonderful blogs and other resources that have a huge amount of information for teaching math:

Dr. Nicki's Guided Math Blog

C.King Education

Math Coach's Corner

Great website for learning more about Singapore Math for problem solving: http://www.teach-kids-math-by-model-method.com/index.html

Videos about Guided Math

Why do Guided Math - Dr. Nicki - https://www.youtube.com/watch?v=vfsz6taglLA

What are math workstations? - https://www.youtube.com/watch?v=KuUHzgC7wpE

Teachers talk about what works for them in Guided Math - https://www.youtube.com/watch?v=IemfuBDS8b4

Structure and important parts of Guided Math - https://www.youtube.com/watch?v=YB--FU2JEOc

Guided Math overview - https://www.youtube.com/watch?v=zXSS4FCNx8w

Guided Math - small group instruction - https://www.youtube.com/watch?v=xNQglGFM2XE

**Managing Math workshop - https://www.youtube.com/watch?v=JRTbkwnoz1M

**Managing Math workshop materials https://www.youtube.com/watch?v=OA6rOgf8hR8

**Math Rotations - planning and grouping - https://www.youtube.com/watch?v=ZzCmNQRmk6s - So many other great things on her blog here: http://www.3rdgradethoughts.com/p/math-rotations.html

Videos about Learning Menus/ Choice Boards:

https://www.teachingchannel.org/videos/differentiating-instruction-strategy

https://www.youtube.com/watch?v=LnpICc0pLS4

https://www.youtube.com/watch?v=0YMafOelxsA

https://www.youtube.com/watch?v=Xv_akpmFyW4

https://www.youtube.com/watch?v=GVNQWhDfjFs

Think-Tac-Toe - https://www.youtube.com/watch?v=A5shd90D73I

Webinar on Learning Menus https://www.youtube.com/watch?v=ez6Lz9oH2XI

Webinar on Choice Boards and RAFT: https://www.youtube.com/watch?v=EHtSd-jgDdA&index=92&list=PLOXUrDMSVPHmyE_csT3X2d050VnQK2539

Example Online Learning Menu: https://sites.google.com/site/duffy5gradechoiceboards/chapters-3-4-choice-board

More examples: https://worc.wikispaces.com/file/view/Alternate+Activity+Menus+for+Math+Grade+5.pdf

Example lesson plan:   http://mathandsciencediffinstruction.wikispaces.com/Choice+Boards

Great wiki for all things differentiation - this is their Choice Board section- Many examples and templates: https://daretodifferentiate.wikispaces.com/Choice+Boards

More examples and templates: http://literacyacrossdisciplines.cmswiki.wikispaces.net/Choice+Boards

And of course, lots of visuals on Pinterest! Here is just one board as an example: https://www.pinterest.com/explore/choice-boards/