Today we marked the homework and then clarified any student questions related to measuring density or using density information to identify materials and predict sinking/floating. The small test on Thurs. will be very similar to the homework and the lab that they did in class with the five cylinders.
Can you? 1. use both the graduated cylinder and electronic scale properly 2. understand the concepts of mass vs. volume vs. density (we imagined what density would look like at the molecular level) 3. use the density formula to calculate density if you know an object's mass and volume 4. use displacement to determine volume of things that don't pour into graduated cylinders 5. analyze densities of different items and determine whether or not items are the same material - or - analyze densities to determine whether an object will float/sink in water - or - analyze densities to determine how different liquids might layer (float/sink) if they were carefully put together. 6. need to memorize density formula and pure water's density.
New info studied today - we got our textbooks out and read a short section (368-71) that compared fresh and ocean water. We used the Smartboard to show what we thought were most important ideas in each paragraph.
No homework - but everyone should study for the test and make sure they finished the notes on 368-71.
Tuesday, September 29, 2009
Tuesday, September 15, 2009
Homework from Today (Tuesday)
I gave you a 'Homestudy' sheet. Parts A & B are review now and part C is what we'll be linking to today's lab the next time I see you. Get the whole sheet finished for Thurs. class.
You all did a good job with today's lab. We'll graph the data next class and look for that new information. Don't forget to come to school tomorrow all ready to run for Cody :-)
You all did a good job with today's lab. We'll graph the data next class and look for that new information. Don't forget to come to school tomorrow all ready to run for Cody :-)
Monday, September 14, 2009
Homework 2009...Sept. 14 update
Hello to this year's grade 8's. For now, I'll use this to communicate homework and points of interest. However, eventually, we'll use this blog for some interactive learning :-)
You've had two homework assignments to date and both involve your parents. Remember, homework is always due the next class, right at the beginning of class.
You've had two homework assignments to date and both involve your parents. Remember, homework is always due the next class, right at the beginning of class.
*First, remember that last week you were supposed to get your course outline signed. I got roughly 1/3 of them handed in today. Get yours in ASAP!
**Today's homework...get your parent to look at & discuss those three graduated cylinder readings...they aren't always easy to read, are they?!? Try to explain to your parent how you interpreted the reading to be a specific number. If your parent is able, s/he could explain to you how she'd interpret it. It isn't simply about writing an answer down on paper, but trying to understand the process of taking a reading. You need a parent signature as your 'proof' that you talked about it.
**Today's homework...get your parent to look at & discuss those three graduated cylinder readings...they aren't always easy to read, are they?!? Try to explain to your parent how you interpreted the reading to be a specific number. If your parent is able, s/he could explain to you how she'd interpret it. It isn't simply about writing an answer down on paper, but trying to understand the process of taking a reading. You need a parent signature as your 'proof' that you talked about it.
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