To achieve this end, NCERT has formulated a four- weeks activity-based alternate academic calendar for grades 1 to 10 to help students acquire competency-based education (CBE).

Read more at https://www.hindustantimes.com/education/cbse-opts-for-competency-based-education-over-textbook-learning/story-NLnT4OLWXEGAlr2m0VZT9O.html