#200 Diving Into Pressure and Buoyancy - Get Materials
Key: (1st/2nd/3rd) denote needed quantities: (1st) enough for 1 student doing all activities; (2nd) for 30 students working in self-paced pairs; (3rd) for 30 students working in pairs on the same lesson. Starred* items may be purchased below.
1/15/15: 2-liter plastic soda bottles with tight-fitting lids (clean, labels removed)1/1/1: water source
* 1/15/15: glass eyedroppers, available from TOPS (see Notes A1 for specifications)
0.5/8/8: feet waxed dental floss
1/2/8: scissors
* 3/17/20: straight plastic straws (avoid very wide ones)
1/15/15: towels, rags, or sponges to wipe up spills
1/2/4: paper punch tools
1.1/17/17: meters string (heavier than kite string and lighter than cord)
* 3/30/45: craft sticks or tongue depressors
* 1/5/15: thick rubber bands (not likely to break when pulled hard)
* 1/5/15: thin rubber bands
* 1/15/15: inches clear tape
1/1/1: access to cool water (from a tap or refrigerator)
* 1/8/15: test tubes
1/5/15: deep glasses or tall jars
1/5/15: tubs or trays to catch water overflow
1/7/17: condiment packets (fast-food type) that float in water
* 1/15/15: pinches modeling clay (oil-based, waterproof)
1/15/15: staples
* 1/2/8: boxes of paper clips
