electricity/magnetism experiment

https://www.youtube.com/watch?v=UY7LT3gNHXI

Electricity/Magnetism

http://www.physics4kids.com/files/elec_intro.html

Estimation/Compatible numbers

https://www.youtube.com/watch?v=vf79Xd9ES-A

Compatible numbers

https://www.youtube.com/watch?v=GWa-plc99bQ

Compatible numbers

https://www.youtube.com/watch?v=u4CdVT-PLO8

Great Plains

http://justtofresh.weebly.com/great-plains.html

Great Plains Flashcards

http://quizlet.com/15557959/landmarks-flash-cards/

Great Plains: Native American slide show

http://www.infoplease.com/us/slideshow/native-american-tribes-great-plains.html

Great Plains

http://www.saisd.net/admin/curric/sstudies/texasstrat/plains.pdf

Base 10 model

http://www.studyzone.org/testprep/math4/d/baseten4l.cfm

http://www.hovercraft-video.com/2012/08/hovercraft-video.html?m=1

Hovercraft: A Multi-Terrain Vehicle - Science Buddies Blog

Hovercraft: A Multi-Terrain Vehicle - Science Buddies Blog