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Trachtenberg Science



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Homework

9/25/07  assignments are posted on the small black(green)board as you enter 
the room. We are currently working thru chapter 3 in the text. We have 
already discussed The Scientific Method, metric system, physical and chemical 
changes. 


4/11/07

Current assignments include. 
Text thru 307.Cells.
In class we are working on Calorie lab where students determine the calories 
in a pecan and a peanut and perhaps other foods. This will be due by the 
l8th. It includes a data table and students will NOT get higher than a D if 
they do not determine the calories per gram(kcal/g) and do not answer 
questions at the end of the activity. All will be demonstated, stated and if 
needed further explained, in class.
Currently there is a home project called Nutrition. It has been explained 
and I am taking any questions. Today we reviewed , determining percent 
protein. This will be due by the end of next week(20th). The student is to 
construct three pie graphs. The third one based on their data table. I am at 
the present, asking students to bring their data tables in on Friday and 
Monday, and any problems we can together work out so they will have the data 
needed to make the third pic chart and draw conclusions and make 
recommendations about their diet.
This project, in addition to having the student gather data and draw 
conclusions, is a way for the children, as part of their unit on Human 
Growth and Development, to learn what is a recommended diet and why and will 
increase their quality of life. This will  hopefully aid them and prevent 
their getting early onset diabetes and heart disease.


Home work is posted regularly on the board and reviewed almost every other 
day. Assignments are usually posted or announced many days in advance.For 
many assignments, almost any excuse will give the student more time.  A 
quiz/test will be on Wed  9/13 and come from the four pages of questions at 
the end of chapter one. Period five will have an additional essay where they 
will describe progress researching project ideas.  Film summaries will be 
due the last week of this nine eeks.
Current homework that should be ready are pages 44 and 55. Pages 75 and 84 
will also be assigned during the week. All four will be collected at or 
around Sept 29th.
Soon the students will be weighing some objects and finding their volumes. 
Then there will be a lab, worth three homeworks, determining density, and 
ranking them by density.  Students will have a nutrition project in 
February. Please start reading food lables and identifying protein,simple 
sugars,complex carbs,saturated fats and unsaturated fats.    Subtract 
indented on the lable, sugar and fiber from carbohydrates to get cmplex 
carbs.  
ADVANCED
The advanced class was assigned their research project the first week of 
school in August. This involves at this time, ONLY doing background 
research. A problem statement CAN NOT be created till the junior scientist 
is knowledgeable in the area they choose to research. The student might 
start with an idea of what they want to know more about. Many suggestions 
from food to pollution have been made. By now the student should have 
investigated (read and summarized in their own words for their background 
and bibleography, not merely xeroxed or printed) their topic in an 
encyclopaedia, dictionary, and their science text. Now it is time with new 
terms and ideas to search The New York Times Science News,a bookstore, 
library,  professional journals or universities dealing with the topic.After 
this research and knowledge is acquired  perhaps specific internet searches 
can be made. I will try and come up with some. But the kids are much better 
at this than I am.   


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Last Modified: Thursday September 27 2007

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