#16 Pressure - Get Materials

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.

* 0.1/1/1: cup oil-based modeling clay
1/10/10: index cards
1/10/10: pair of scissors
1/2/4: bathroom scales (optional)
1/10/10: calculators
* 1/5/5: rolls masking tape
* 5/50/50: straight plastic straws
* 2/20/20: meters 1/4 inch diameter tubing
3/30/30: plastic sandwich bags
4/40/40: meters string
3/9/30: textbooks
2/20/20: plastic produce bags
* 1/10/10: paper clips
3/30/30: standard-sized canning jars
* 3/30/30: standard-sized canning rings and lids
* 1/6/10: small plastic syringes (perhaps 3 cc)
* 1/4/10: large plastic syringes (perhaps 30 cc)
* 1/10/10: small test tubes
* 1/10/10: large test tubes
1/10/10: large plastic dishpan or equivalent to catch water
1/1/1: water source
* 1/10/10: baby food jars (or beakers)
* 1/10/10: clear soft-plastic drinking cups
* 1/6/10: large nails, about 3 1/2 inches
1/6/10: needle-nose pliers
* 6/60/60: washers with 5/16 inch diameter holes
* 1/10/10: small balloons
* 3/30/30: large rubber bands
* 2/20/20: eyedroppers
2/20/20: wooden matches
1/10/10: cereal boxes
2/20/20: cups sand (or gravel, or dirt)
* 1/1/1: bottle food coloring
1/1/1: jar petroleum jelly
* 1/10/10: clothespins
1/4/10: pie tins
1/6/10: medium-sized tin cans
1/4/10: funnels
2/20/20: paper towels
*1/6/10: Ping-Pong balls
1/6/10: cardboard toilet tissue tubes
1/2/5: hole punch tools
* 1/6/10: candles and matches
* 1/10/10: 100 mL graduated cylinders
1/4/10: large plastic milk jugs
* 2/20/20: BB shot pellets
2/20/20: size-D batteries, dead or alive
1/1/1: large capacity (1000 gram) balance
1/4/10: long clipboards (or plywood squares, or thick telephone books)
1/1/1: bottle rubbing alcohol
* 1/4/10: film canisters (or pill vials)
1/1/1: roll plastic wrap
1/4/10: flat toothpicks (optional)
1/10/10: large cider jugs (optional)