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October 24, 2007
Connor's Math Work 2007/10/24
We had taken a few days off for illness and pressing work, so now it's back to it. I wanted to catch up Connor on a few areas that he hasn't really been exposed to yet, due to Singapore's sequence, but which are prerequisite to the Dolciani pre-algebra. The areas I'm not sure of, given his difficulties with the expressions I gave him, are negatives (in particular, signs in combination like 2 - -4), grouping and canceling, and factors and factoring. So today Connor will be getting some sign work:
Simplify the following:
- a - b
- -a - b
- a + -b
- a - -b
- -a - -b
- a • b
- a • -b
- -a • b
- -a • -b
- a / b
- -a / -b
- a / -b
- -a / b
- a • b + a • (-b) + -a • b - a • b - -a • b
- a / b + -a / b + b / -a - a / b - -a / b
- a • -b + a / -b + -a • b - -a / b
Update: He's still not getting this. Sadly, I didn't try explaining the concept early enough in the evening, and I was probably a bit incoherent. I'm giving him the same problems tomorrow, but substituting a = 3 and b = 2, and will ask Steph to plug the explanation gap.
Posted by jeff at October 24, 2007 8:27 AM
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Comments
Don't worry, it will click for him, soon. Keep up the good work.
Have a good weekend
Robin of mytwoblessings
Posted by: Robin of mytwoblessings at October 27, 2007 2:46 PM