Forces and Motion:     

http://www.bbc.co.uk/schools/scienceclips/ages/9_10/changing_sounds_fs.shtml - sound instruments - can change sounds/pitch/etc.

www.studyjams.com – TONS of free science resources and videos

www.brainpopjr.com – sound video and activities

http://educationextras.com/sound.html - 4 lessons for sound, video links, and digital resource links

Magic School Bus Sound Museum (United Streaming)

www.pbs.org – teacher resources for sound

Matter (Properties and Change):

Video, activities, and cute song from study jams:

http://studyjams.scholastic.com/studyjams/jams/science/index.htm

Solid/Liquid Interactive “game” -http://www.bbc.co.uk/schools/scienceclips/ages/8_9/solid_liquids.shtml

ScienceA-Z.com - leveled readers

Brainpop Jr – free video on solid, liquid, gas and changes in states of matter

There are TONS of experiments out there, but here are a few samples..

Sample experiments: http://www.superteacherideas.com/science7-matter.html

Example science texts http://www.amazon.com/s?ie=UTF8&keywords=States%20of%20matter&page=1&rh=n%3A4%2Ck%3AStates%20of%20matter#

Activities and a mini webquest (scavenger hunt) https://college.livetext.com/doc/1232539?print=1

www.unitedstreaming.com has a few videos, too.