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EXPLORING BIODIVERSITY: A Guide for Educators Around the World

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using a natural resources<br />

means using <strong>the</strong> resources in<br />

a way that allows people and<br />

o<strong>the</strong>r species to get what <strong>the</strong>y<br />

need today while ensuring<br />

that future generations will<br />

also get what <strong>the</strong>y need.<br />

However, figuring out how to sustainably<br />

use a natural resource is not<br />

easy. For example, different kinds of <strong>for</strong>ests have<br />

many different uses that require different management<br />

techniques. Since <strong>the</strong> speed with which we<br />

consume natural resources is always changing, it is<br />

sometimes difficult to tell whe<strong>the</strong>r a resource is<br />

being used sustainably at any particular moment.<br />

Sustainable management also depends on whe<strong>the</strong>r<br />

a resource is renewable or non-renewable.<br />

GETTING READY<br />

Make sure you have plenty of room in <strong>the</strong><br />

classroom. Pour half a bag of beans onto a tray<br />

and place <strong>the</strong> tray on a table in an open area of<br />

<strong>the</strong> room.<br />

Read step 1 in <strong>the</strong> “What To Do”<br />

section and do a trial run on your<br />

own to figure out how many<br />

beans you’ll need <strong>for</strong> each<br />

group. This is how you will<br />

find out how many beans<br />

you will need <strong>for</strong> <strong>the</strong> rounds. Pick<br />

up beans from <strong>the</strong> tray using two<br />

of your fingers (<strong>the</strong> tips of your<br />

index finger and thumb) <strong>for</strong><br />

ten seconds. Make sure you<br />

time yourself accurately. Repeat<br />

this <strong>for</strong> <strong>the</strong> number of people you’ll have in each<br />

family (usually four or five students). Count <strong>the</strong><br />

total number of beans you’ve collected from <strong>the</strong><br />

tray. If you have four families, you’ll need four<br />

times as many beans as you have collected to<br />

cover <strong>the</strong> entire class. Playing <strong>the</strong> game with too<br />

many beans won’t illustrate <strong>the</strong> concepts as<br />

clearly.<br />

For a family of four, you should start with<br />

approximately one cup of beans.<br />

On <strong>the</strong> chalkboard, copy this chart:<br />

Round Family Family Family Family<br />

1,2, or 3 Name Name Name Name<br />

Great-great Results Results Results Results<br />

grandparent<br />

Great-grandparent Results Results Results Results<br />

Grandparent Results Results Results Results<br />

Parent Results Results Results Results<br />

Children Results Results Results Results<br />

Total beans Results Results Results Results<br />

Remaining<br />

Make six separate “condition cards”. The individual<br />

cards should read, Drought (Remove 1/2 cup<br />

of beans); Surplus (Add 1 cup of beans); Average<br />

Yield (Add 1/2 cup of beans); Fire (Remove<br />

1/2 cup of beans); Contamination<br />

(Remove 1/2 cup of beans). One card<br />

should be left blank.<br />

64

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