steel bowl floats. She asks students, 'why do you think the bowl did not sink? What will make it
sink?' Which of the following process skills is the teacher trying to develop among her learners ?
Understanding the Density Activity Scenario
The science activity presents a common observation related to density and buoyancy: a steel spoon sinks in water, but a steel bowl made of the same material floats. This difference sparks curiosity about why.
Teacher's Guiding Questions
To deepen students' understanding, the teacher poses specific questions:
- 'Why do you think the bowl did not sink?'
- 'What will make itsink?'
These questions aim to stimulate critical thinking and move beyond the initial observation.
Analyzing Scientific Process Skills
The teacher intends to develop a specific scientific process skill. Let's evaluate the options:
- Observing: Students have already observed that the spoon sinks and the bowl floats. The teacher's questions encourage them to interpret these observations, going beyond just noticing them.
- Hypothesizing: The first question directly prompts students to form possible explanations (hypotheses) for why the bowl floats, such as its shape or the air it contains.
- Inferring: Inferring involves drawing conclusions based on observations and reasoning. Students might infer that the bowl's shape plays a role, but the second question asks for a more active approach.
- Experimenting: The second question, 'What will make itsink?', is crucial. It asks students to think about actions or modifications they could perform to test their ideas and change the outcome. This involves proposing a change (like adding weight to the bowl) and predicting or observing the result. Designing and conducting such tests to verify hypotheses is the core of the skill of experimenting.
Conclusion on Developing Process Skills
By asking students to consider not only *why* an object behaves a certain way but also *what they could do* to change its behavior, the teacher is encouraging them to think about planning and executing tests. This focus on testing ideas through planned actions is central to developing the process skill of experimenting.
Important Questions from Experimentation/Practical Work
A teacher gives his students pictures of different animals and asks them to colour on all those animals which do not live in our houses. The motive of this activity is -
(i) Development of creative skill
(ii) Development of observational skill
(iii) Development of classification skill
(iv) Development of Data Collection
Which of the aforementioned are correct?
A teacher tells every student to make useful things from waste material. Which of the following statement is not the educational motive of the teacher?
- In a science class, Mr. Sumit brought some material. It was a water bottle, a glass and thick paper sheet. He poured water in the glass and put the thick paper sheet on it. Slowly and carefully, he inverted the glass and removed his hand from there. Learners were surprised that paper had stuck to the glass and water was not coming out.
Some students said that paper had glue inside while others said it had stuck due to water inside the bottle. What, according to you, was the objective of doing this task ?
(A) Help learners to understand that experiments are the principal route to scientific knowledge.
(B) Encourage learners to construct explanations based on their observations.
(C) Encourage learners to ask questions.
