Saturday, October 29, 2011
Subtraction
This is the very beginning of understanding how subtraction works.
Let's look at this set:
Let's look at this set:
Count how many triangles
are in this set... There are 5!
Now, take two triangles away...are in this set... There are 5!
Sunday, October 23, 2011
Saturday, October 15, 2011
Addition
This is the very beginning of understanding how addition works.
Let's look at two sets:Set A | Set B |
Count how many triangles are in Set A... There are 2! | Count how many triangles are in Set B... There are 3! |
Count how many triangles are in this set...There are 5! |
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