 The main objective of this programme was to make learning of science as close to the learner as possible.For this purpose an entirely activity-based science curriculum - Bal Vaigyanik, for middle school was developed in the 70s.There was a need felt to extend this to beyond class 8 to include classes 9 and 10 as this was the period when children could learn everything possible about science as after class 10 they would choose different streams.