Sunday, April 1, 2012

12 or 20???

Have you ever noticed how often young children mix up these numerals?  Many times they call 12, "20" or 20, "12".  It is worth taking some time to make sure that children can differiate between these numerals.  Some activities that I have used to address this issue are listed:

  • Hit the Number:  Use a deck of about 20 cards with numerals 12 and 20 written on them.  You can get blank playing cards or use index cards.  Play hit the 12 or 20.  As you flip over the cards the child names the numerals, and tries to hit the focus numeral.  If they hit the numeral before you do they win the cards.
  • Play memory with numeral cards.  
  • Match the amount with the numeral on a numeral roll or number chart.  Get 12 cubes.  How many is that?  Which numeral shows that amount?  (Ask student to point to the numeral.)  Get 20 cubes.  How many do you have?  Which numeral shows that amount? (Ask student to point to the numeral.) 
  • Numerals in the Environment:  Point to numerals 12 and 20 as you find them in the classroom and school environment. (Clocks, room numbers, lockers, page numbers ...)  Ask the child to name the number.  Also ask the child to locate 12 or 20 in their surroundings.  

If you have activities that you have used to address this issue please share!!

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