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Equipment name | Sources | Suggestions for use | Notes |
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Bags, feely |
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| Feely bags can also be made from brown paper, wine bags, or old socks. |
Balances, spring 0–20 N (Newtons) |
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| Spring balances can be made from rubber bands and a ruler. |
Ball and chain |
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Balls (selection) |
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Batteries AAA AA C D 9 V |
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| Consider purchasing chargeable cells and a charger. Discharged dry cells are a useful source of zinc metal (casing) and carbon rod (central rod). |
Beakers, glass (various sizes) | Scientific suppliers |
| Jam jars often make good substitutes and can be heated in a microwave oven. Clear film canisters can be used as small beakers. Glass beakers are easily broken. |
Beakers, plastic (various sizes) | Scientific suppliers |
| Consider plastic tumblers from supermarkets. Heat only by hot water. |
Bicycle pumps |
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| An inflatable- mattress pump or an electric tyre pump can also be used. |
Bimetallic strips (Compound bars) Brass-iron |
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| Bimetallic strips could be borrowed from a secondary school. |
Binoculars (8 x 30 magnification) |
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| Binoculars can be hired in some areas. They are better than a telescope. Do not allow students to use them to look at the sun. (Can damage eyes.) |
Bones and skeletons |
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| X-ray negatives can also be used. |
Bottles (clear, with screw top) |
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| Substances must not be stored in beverage bottles. |
BSM items |
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Buckets |
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| Alternatives are two-litre ice cream containers or four-litre margarine pails. |
Bulb holders MES (socket on plastic base) |
| Make sure light bulbs are compatible with the holder. | |
Bulbs
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| Ensure that the voltage of the bulb(s) is equal to the total voltage of the cells in the circuit.
Consider using |
Burners, spirit Aluminium Glass |
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| It is advisable to embed the burner in a container of sand (such as an ice cream container) when in use. A hot plate, electric frypan, or water bath is usually a safer alternative. |