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    21 st
                      COMPETENCY-BASED QUESTIONS                                                    Century   #Critical Thinking
                                                                                                     Skills  #Technology Literacy
                      1.   Anshika is helping her younger brother with his homework. He is confused about why 345 in decimal
                         is not written using letters of the alphabets or special characters. How will Anshika explain the base
                         and digit range of the decimal system?
                      2.   Krish is playing a coding game where he comes across the binary number 110101.
                         He needs to find its decimal equivalent to unlock the next level. Please help him.

                                   LAB LEARNING                                              21 st
                                                                                           Century   #Critical Thinking
                                                                                            Skills  #Technology Literacy
                              1.  Find out the size of your hard drive in gigabytes (GB). Convert this decimal value into the
                                 binary and octal number systems.
                              2.  Open any folder that contains Excel, Word or PowerPoint files. Note down their sizes in
                                 megabytes (MB). Convert these sizes into binary and hexadecimal number systems.

                                        CODE CHECK                                                   Century   #Critical Thinking
                                                                                                      21 st
                                                                                                      Skills
                         1.  A computer system stores data in 4 bytes. How many bits of data does the system store?
                         2.  Guess my date of birth. I was born in the 9th month of the year. My date of birth is ‘10111’ in
                             binary and the year is ‘3675’ in octal.

                                                                                                   21 st   #Communication
                                                                                                  Century
                                                                                                  Skills  #Information Literacy
                                Organise a group discussion where students explore and compare various number systems
                                like binary, decimal, octal and hexadecimal. Encourage them to share real-world applications
                        and learn from each other’s insights.

                           JOB JUNCTION
                              People who are experts in number systems may pursue careers as Software Developers, Data
                             Analysts, Network Engineers or Computer Scientists.

                       PEDAGOGY PATHWAYS

                        «   Demonstrate the concept of number systems using real-life examples.
                        «   Provide hands-on activities for converting between different number systems.

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