Days 51 and 52: decimal estimation and scientific notation

It was a short, but long week. Thursday afternoon and evening was parent teacher conferences and Friday was Institute. On Wednesday and Thursday standard students worked on decimal estimation. I need to do more work with compatible numbers.

Problems were posted around the room. One student had fun with this problem.

decimal estimation

He accidently wrote 2000 instead of 1200 when doing his calculation. Nonetheless, he had fun with it.

a devil of a problem

Pre-algebra students worked on scientific notation. Students are working on the monitoring reading strategy and it was enlightening that they blew right over the key concept regarding the mantissa and the formula.

sci notation

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