#09 Floating and Sinking - Get Materials

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Key: (1st/2nd/3rd) denote needed quantities: (1st) enough for 1 student doing all activities; (2nd) enough for 30 students working in self-paced pairs; (3rd) enough for 30 students working in pairs on the same lesson. Starred* items may be purchased below.

* 1/10/10: small 10 mL graduated cylinders
1/1/1: source tap water, hot and cold
* 1/10/10: gram balances. Use the equal-arm balance improvised in Weighing #05, or any lab balance.
1/1/1: box table salt
2/2/2: quart jars or equivalent with lids
1/1/1: bottle 70% isopropyl alcohol. Sold in home remedy section of pharmacies.
1/1/1: bottle 100% corn oil
1/1/1: bottle baby oil (mineral oil)
* 5/45/50: large 6 ounce baby food jars with lids
* 5/45/50: eyedroppers
1/1/1: roll paper towels
* 1/2/4: rolls masking tape
1/5/10: jars or glasses, 8 ounces or more
1/10/10: test tubes (or small graduates)
* 2/15/15: emergency candles
* 1/1/1: box straight pins
1/2/5: needle-nose pliers with wire cutting edge
* 1/10/10: large 100 mL graduated cylinders
* 3/30/30: straight plastic drinking straws
1/2/5: paper punch tools
1/10/10: hand calculators
* 0.5/5/5: cups oil-based modeling clay
1/10/10: scissors
1/10/10: plastic margarine tubs (bowls)
* 1/10/10: six-inch lengths wood dowel
1/3/3: toothpicks
* 1/1/1: packages birthday candles
1/10/10: paper drinking cups, 6 ounces or larger
1/5/10: medium-sized cans
1/2/10: golf balls
2/10/20: size-D batteries, dead or alive
1/4/10: centimeter rulers
1/1/1: box plastic wrap
* 2/20/20: natural or synthetic corks (not rubber), wine-cork size or larger. Two smaller corks may also be used together, or larger corks may be trimmed down.
1/10/10: plastic sandwich bags
1/10/10: large cereal boxes
* 2/15/20: large rubber bands
* 1/1/1: roll 28 gauge steel wire
1/3/10: meter sticks
* 1/10/10: paper clips
* 1/1/1: spool of thread
* 1/10/10: film canisters
* 1/3/10: solid rubber stoppers
1/3/10: books of matches
1/3/10: plastic lids
* 1/1/1: package BB shot
1/3/10: tablespoons
* 1/1/1: blue food coloring with dispenser
1/10/10: ice cubes
1/2/10: helium-filled balloons