Página — Uerakua Anapu Uantakua Projects And Readings 3° Secundaria (pág. 43)

INQUIRY DESIGN AND DEVELOPMENT That's the Question!

Substances in general have specific characteristics associated with their internal structure, that is, chemical compounds give them physical and chemical properties that distinguish them, such as the state of aggregation,melting point, boiling point, solubility, and electrical conduction.

As it was stated in the case of the dehydrated person in the reading in "Beginning and Observation," there are various situations in which it is convenient to know the properties of chemical elements or compounds.

1. In community, analyze the following hypotheses:

a) Hypothesis 1: If the group of campers in the reading had had the knowledge on how to help the dehydrated person, they would have been able to help them adequately without putting their life at risk.

b) Hypothesis 2: If you don't know the chemical nature of the substances, tests can be done in the classroom to find it out.

c) Hypothesis 3: If you know the chemical nature of the substances, then you know the use and precautions in handling them.

2. If necessary, propose a hypothesis and write it in your notebook.

Seek and Find

1. In assembly, and with the help of your teacher, design a plan to search for sources of information to support and verify the hypotheses selected as well as the possible solutions. Also keep in mind to arrange an interview.

2. Organize the aspects of your research through the interview.

a) Decide who to interview and justify your choice. The people in general, and their daily or professional lives may be related to food, medication, tools, cleaning products, or others.

b) Propose the questions for the interview and mention the sources of information you use as a reference.

c)Remember, it is important that, based on the questions, you get the answers on the use and classification of the substances with which the interviewees work and how they learned this.

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