Complete Master List for #19 Electricity:
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. Five triple starred items below may be purchased in #SK19: Advanced Electricity Starter Kit. Single starred* items may also be purchased below.
- * 1/1/1: spool thread
- 2/30/30: squares of 10x10 cm silk cloth
- * 1/5/5: rolls masking tape
- 1/15/15: pairs of scissors
- 2/30/30: styrofoam cups (blocks of polystyrene)
- * 3/30/30: size-D batteries
- * 10/100/100: meters bare copper wire, 24 gauge or thinner
- 1/6/6: pliers with wire cutter
- 10/120/130: pennies
- * 2/30/30: traditional flashlight bulbs
- * 2/30/30: straight plastic straws
- * 10/200/200: medium or heavy duty rubber bands
- * 1/1/1: box steel straight pins
- 1/5/15: tin cans
- *** 1/15/15: galvanized nails, about 2 1/2 inches
- * 1/2/2: rolls aluminum foil
- 1/3/6: paper punch tools
- * 5/120/120: clothespins
- * 1/4/4: boxes paper clips
- 1/15/15: metric rulers
- 1/15/15: plastic produce bags
- 1/4/8: meter sticks
- * 3/60/60: meters (or more) insulated wrapping wire
- * 2/30/30: baby food jars
- * 1/15/15: ceramic magnets
- * 1/1/1: box steel wool, fine-grade, unsoaped
- 2/30/30: index cards
- 1/1/1: box: source of corrugated cardboard
- ***0.1/2/2: liters 5% hydrochloric acid
- 1/15/15: 100 mL beakers (or baby food jars)
- * 1/10/15: small test tubes
- 1/1/1: box baking soda
- 1/5/15: books of matches
- 2/30/30: paper towels
- 1/5/15: plates or petri dishes (optional)
- 1/1/1: bottle 3% hydrogen peroxide dispensed in smaller dropping bottles
- *** 6/30/90: split-shot lead fishing sinkers
- 1/1/1: box table salt
- *** 1/5/15: capacitors rated 0.1 farad or greater
- * 0.1/2/2: cups oil based clay
- *** 2/10/30: 100 ohm resistors rated at 1/4 or 1/2 watt
- 1/5/15: commercial galvanometer or ammeter with milli-amp sensitivity, needed in 3 activities
- 1/1/1: bottle vinegar
- 1/5/15: washers
regular strength, 20 square feet x 12 inches rolls
Buy aluminum foil here as a convenience item, or for less in many grocery stores.
Baby Food Jars - assorted
Each set includes 4 small, 4 medium and 4 large glass jars.
These are basic workhorse brands, available everywhere.
Clay - modeling
Sold by the 100 gram stick, about 1/4 cup, in assorted colors (our choice). One stick serves a whole classroom for TOPS applications.
These are handy lab items to keep in stock. We use them as bulb holders, tongs, clips, and more.
4.5 volt, with collar
This traditional filament bulb shines reliably bright (won't blow out) with 3 size-D batteries, yet still glows visibly with just 1 battery. Used in #19 Electricity, #32 Electricity, and #91 Global TOPS.
Tips on shopping elsewhere: Select bulbs with protruding metal 'collars' to facilitate secure integration into clothespin bulb-holders. Use just one bulb brand and resistance rating so all bulbs shine with equal brightness when powered by equal voltage.
Magnet - ceramic
rectangle, 3/16 inch thick
Your basic refrigerator magnet, about the width and length of a large postage stamp, with N and S poles on each face and a hole in the middle. A useful and popular science supply used in may TOPS titles. Purchase at least 2 per student.
size #1, steel, box of 100
Paper clips have 1001 uses in TOPS experiments, and science in general. Feel free to use paper clips you already have, but be aware that different brands come in different sizes and weights. In experiments where uniformity is important, don't mix brands.
Rubber Bands - assorted
10 grams each of thin, medium and thick
You get 30 grams of soft, strong, durable rubber bands: thin #16 (about 50), medium #32 (about 20), and heavy-duty #64 (about 10). These sizes are specifically selected to work in most TOPS experiments.
fine grade, unsoaped
A handy lab supply, for studying electricity. Each pad is about the size of a classic Shredded Wheat biscuit. Used in #11 Oxidation and #32 Electricity.
steel, one and 1/16 inch long
Used in many TOPS experiments. Sometimes required for their magnetic properties. Don't purchase aluminum straight pins by mistake.
Straws - straight
Any length straw, between 0.20 and 0.25 inches in diameter is suitable. Grocery stores generally carry straws with flexible "elbows." You can use those if you cut off the bendable section before using.
Tape - masking
3/4 inch x 55 yd roll
A handy science supply used in most TOPS modules.
Test Tube - small disposable
6 mL capacity, 12 mm OD, 3 inch (75 mm) length
A lighter weight rimless Pyrex test tube made with thinner glass.
Test Tube - small reusable
9 mL capacity with 13 mm OD and 4 inch (100 mm) length
A tough Pyrex test tube made with rim and thicker glass. Has a white spot for labeling.
light duty, 25 yd spool
Just plain old thread. Used in many TOPS titles, especially in Pendulums #34.
Wire - 24 gauge copper
This science lab staple is used in #19 Electricity, #20 Magnetism and #33 Magnetism.
Wire - 30 gauge copper
thin, bare wire
A specialty item used in #19 Electricity.
Wire - wrapping
100 feet, plastic insulated
Also called magnet wire or bell wire. This science-lab staple is used in #19 Electricity, #20 Magnetism, #33 Magnetism, and #91 Global TOPS.
Wrapping wire may be recycled from old motors or transformers. If insulated with paint rather than plastic tubing, end leads will need to be sandpapered clean, not stripped with pliers.