#12 Solutions - 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 10 lab groups all self-paced; (3rd) enough for 30 students working in 10 lab groups, all doing the same lesson. Starred* items may be purchased here.

1/1/1: roll soft paper towels
1/10/10: scissors
* 5/50/50: laboratory filters. Some densely-woven lavatory paper towels on rolls may also work. Test in advance.
* 1/1/1: packages: corn starch, granulated sugar, alum, fine-grained table salt, baking soda, copper sulfate, rock salt, Epsom salt. Include a dispensing spoon with each package.
* 3/30/30: baby food jars or equivalent, most with lids (or small beakers)
1/1/1: water source. Use distilled water if source is hard.
* 1/6/10: dropper bottles each: iodine, rubbing alcohol.
1/3/6: dropper bottles each: chlorine bleach, mineral oil, liquid detergent, India ink, vinegar, distilled water.
1/1/1: hot plate with teapot (or Bunsen burner, or alcohol lamps, and matches)
* 2/10/20: eyedroppers
1/1/2: packets of non-dairy creamer
1/1/1: shaker of pepper
* 3/30/30: test tubes, 12 mL or more
* 1/5/10: magnifying glasses
1/10/10: small paper drinking cups
1/4/10: metric rulers (optional)
* 1/1/1: roll aluminum foil
1/1/1: package rice
1/1/1: envelope powdered milk
1/1/1: package flour, bleached or unbleached
* 1/5/10: rolls clear tape
* 1/10/10: graduated cylinders, 10 mL capacity
1/1/1: box seltzer tablets, Alka-Seltzer or equivalent
*1/1/1: box sugar cubes
* 1/6/10: microscope slides
1/1/1: box facial tissues (roll toilet paper)
1/4/10: microscopes (optional)
* 1/1/1: package rubber bands
1/1/1: can scouring cleanser (optional)
1/10/10: index cards
1/2/4: paper punch tools
* 1/1/1: box plastic straws
1/1/1: wall clock with second hand (or wristwatches)
* 1/6/10: gram balances (instruments constructed in #05 Weighing are suitable)
1/10/10: calculators
* 1/5/10: small Pyrex beakers
* 1/1/1: clothespins
1/1/1: permanent markers
1/1/1: bottle calcium acetate
1/1/1: bottle sodium thiosulfate