According to N.C.F. 2005 in the upper primary stage science curriculum, which of the following is recommended ?
a. Concepts should be linked to making sense of everyday experience.
b. Concepts should be arrived at from activities/experiments.
c. Concepts should be taught through disciplinary approach.
d. Along with concepts, laws and theories need to be introduced

The correct answer is a and b.

According to the National Curriculum Framework (NCF) 2005 for the upper primary stage science curriculum:

1. Concepts should be linked to making sense of everyday experience (Statement a): At the upper primary stage, science education should engage the learner in learning principles of science through familiar experiences, working with hands to design simple technological units and models, and acquiring skills in pedagogical practices.

2. Concepts should be arrived at from activities/experiments (Statement b): Science learning at this stage should be hands-on and activity-based. Children should be encouraged to explore, conduct simple activities and experiments, and derive scientific concepts logically from these experiences rather than relying purely on rote memorization.

3. Disciplinary approach vs. Integrated approach (Statement c): NCF 2005 recommends an integrated approach to science teaching at the upper primary stage, rather than a strict disciplinary approach (where Physics, Chemistry, and Biology are taught as completely isolated subjects).

4. Introduction of complex laws and theories (Statement d): Formal introduction of abstract concepts, rigorous scientific laws, and complex mathematical theories is recommended for the secondary and higher secondary stages, not the upper primary stage.

Therefore, statements a and b are recommended under NCF 2005 for upper primary science curriculum.