Changes
From Karnataka Open Educational Resources
2 bytes added
, 18:20, 7 July 2016
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| ===Part 1=== | | ===Part 1=== |
| #By the previous activity we have 11 apples. Now we add a few more. Let us say we add 4 more. We have 15 apples. | | #By the previous activity we have 11 apples. Now we add a few more. Let us say we add 4 more. We have 15 apples. |
− | <b>11 + 2 = 13 ( + 2 signifies increase in apples) | + | <br>11 + 2 = 13 ( + 2 signifies increase in apples) |
| <br>13 + 2 = 15 Write the expression. Again + signifies increase | | <br>13 + 2 = 15 Write the expression. Again + signifies increase |
| #2. Let us say I ask the question – what should I add to 15 to make the number of apples 10? They will say take away Let us say we cannot use the word “take away”. <br> | | #2. Let us say I ask the question – what should I add to 15 to make the number of apples 10? They will say take away Let us say we cannot use the word “take away”. <br> |
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| *When I add (-7). I get 8. For me to get 9, I have to add a number greater than (-7) and I have added (-6). Similarly (-5) is greater than (-6). So the larger negative number is actually smaller.<br> | | *When I add (-7). I get 8. For me to get 9, I have to add a number greater than (-7) and I have added (-6). Similarly (-5) is greater than (-6). So the larger negative number is actually smaller.<br> |
| # Now we transition from numbers representing some quantities to numbers being manipulated as numbers.<br> | | # Now we transition from numbers representing some quantities to numbers being manipulated as numbers.<br> |
| + | |
| ===Part 2=== | | ===Part 2=== |
| #We have seen what negative numbers are. We will see how to work with them. <br> | | #We have seen what negative numbers are. We will see how to work with them. <br> |