National Curriculum Framework (NCF) strongly recommends that Science education at upper primary stage should

• prepare students for competitive examinations

• help students to be emotionally balanced

• help students to acquire computational skills

• follow constructivistic approach for teaching and learning of the subject

Cognitive validity' of Science curriculum at upper primary stage requires that it should

• be age appropriate and within the reach of students understanding level

• convey scientifically correct content

• nurture the natural curiosity and creativity of the learners

• enable the students to appreciate how the concepts of Science evolve with time

Which one of the following does not reflect the personality attribute of a person having scientific temper?

• Seeking evidence

• Biased opinion

• Rational thinking

• Open-mindedness

34.

NCERT Science textbooks for upper primary classes include large number of daily life-related questions which have been left unanswered. This has been done, so that

• teachers have a good pool of questions for assessment purpose

• students can send these questions to scientists to get the answer

• teachers can use these questions for home assignment

• students can seek answer to these questions by exploring different resources

While teaching the correct method of reading a clinical thermometer to Class VIII students, Neha mentions the following necessary precautions to be taken.
Which one of the following precautions has been mentioned wrongly by the teacher?

• Thermometer should be washed with hot water before and after use

• Do not hold the thermometer by the bulb while taking the reading

• Ensure that before use, the mercury level in the thermometer is below 35^oC

• Read the thermometer keeping the level of mercury along the line of sight

The section on 'activities and projects' included in the exercises of NCERT Science textbooks for Class VIII primarily aims at

• enhancing in-depth understanding of the basic concepts 

• keeping the students engaged during vacations

• assessing the students on practical skills

• providing opportunity to students for extended learning

Four candidates appearing in an interview for the post of Science teacher were asked to give a demonstration lesson to class VIII students on the topic 'Pressure exerted by liquids and gases'. Following different approaches were followed by different candidates.
Which one of the following approaches will be most effective for teaching of the topic?

• Detailed explanation of related concepts with the help of diagram on the blackboard

• Use of charts for explanation of different concepts

• Organization of hands-on student activities followed up with discussions

• Greater focus on classroom questions during the lecture

The technique of 'classroom questioning' in teaching of Science can be more effectively used for

• ensuring levels of learning

• developing problem solving skills

• maintaining discipline in the class

• promoting creativity and innovativeness

Good science education should be 'true to the child', implies that science we teach should

• relate to the environment of the child

• convey significant aspects of science content

• be understandable to the child

• engage the child in learning process skills

While teaching the correct method of measuring volume of a solid using a measuring cylinder, Kavita mentions the following steps (not in correct sequence) to be followed.
(i) Note the reading of level of water in the cylinder.
(ii) Suspend the solid with a thread inside water in the cylinder.
(iii) Record the least count of the measuring cylinder.
(iv) Put sufficient water in the cylinder and note the reading.
Which one of the following is the correct sequence of steps for the said purpose?

• (i), (ii), (iii), (iv)

• (iii), (ii), (iv), (i)

• (iii), (iv), (ii), (i)

• (iv), (ii), (iii), (i)