Posted by: cyncas | October 27, 2009

Using number line for Subtraction

Today the children might have mentioned that we went Christmas shopping.  The reason behind this story is that we pretended we had to buy 10 presents and removed from the list those we had bought.  Example: We had 10 presents to buy (on number line go on 10), we bought 3 presents for mummy (on number line jump down 3 numbers), we are on 7,  We then bought 3 presents for daddy (jump 3 down again) we are on 4, then we bought 2 presents for granny (jump 2 down) we are on 2. ….  By now the children were so excited they started calling out …. What about a gift for me???  They realized that the number was getting smaller and didnt want to be left with nothing.  This was an introduction to subtraction or take away or minus – all terminology used.  Use it at home whenever you have take away activities to do.  Have a look at the photos.  I wonder what we will invent tomorrow for take away!!!

add using nos line

take away w nos line

add using nos. line

take away using nos line

take away using nos. line

take away using nos. line


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