Question 1 - Page 57 - Some Early Number Systems - Chapter 3 Class 8 - A Story of Numbers (Ganita Prakash)

Transcript

Question 1 - Page 57 Quickly count the number of objects in each of the following boxes:By just glancing, we can immediately calculate 2 chickens 4 dolls 1 dog 5 apples 3 pyramids Notice that we can calculate up to 4 or 5 objects at a single glance. This is because Most humans find it difficult to count groups having 5 or more objects in a single glance This natural limit of perception is likely what encouraged early humans to create symbols for groups (like a tally mark for every 5) rather than just counting single items one by one. FYI, there are 16 flowers 11 stairs 9 pencils Approx 40 grapes