Mentor Grade 4 Encyclopedia is designed in line with the new Competency Based Curriculum (CBC) which is developed by Kenya Institute of Curriculum Development (KICD).

The book contains activities in the following learning areas:

-Mathematics                           -Physical Health Education(PHE)
-English                                    -Homescience
-Kiswahili                                  -Agriculture
-Science and Technology          -Art&Craft                                      
-Social Studies                             -Music
-Christian Religious Education(CRE)