October 2008 Teacher's Guide Table of Contents


The Many Looks of the Periodic Table



Download 491.66 Kb.
Page5/20
Date13.08.2017
Size491.66 Kb.
#31605
1   2   3   4   5   6   7   8   9   ...   20

The Many Looks of the Periodic Table



Directions for all Anticipation Guides: In the first column, write “A” or “D” indicating your agreement or disagreement with each statement. As you read, compare your opinions with information from the article. In the space under each statement, cite information from the article that supports or refutes your original ideas.


Me

Text

Statement







  1. Elements with similar properties are found in columns in the Periodic Table.







  1. Elements in the Periodic Table are listed according to increasing atomic mass.







  1. The elements in the f-block have few similarities in properties.







  1. Elements in triads as arranged by Eric Scerri are grouped by averaging their atomic numbers.







  1. The spiral periodic table places the elements in hexagons instead of squares.







  1. Chemical elements are produced in the stars.







  1. The first 3-dimensional periodic table was developed in 1929.







  1. The periodic table we currently use is probably the best we will ever have.


Natural, Braided, Bleached, Colored, and Curly Hair . . . Thanks to Chemistry



Directions for all Anticipation Guides: In the first column, write “A” or “D” indicating your agreement or disagreement with each statement. As you read, compare your opinions with information from the article. In the space under each statement, cite information from the article that supports or refutes your original ideas.


Me

Text

Statement







  1. “Flyaway hair” is caused by negatively charged strands of hair repelling each other.







  1. Chemicals with no water are used by people whose hair is frizzy in humid weather.







  1. Styling gels are made of small molecules.







  1. Hydrogen peroxide removes the pigment from the hair.







  1. Ceramic flat irons used for hair straightening work at temperatures near the boiling point of water.







  1. Many hair relaxers use hydroxides to weaken the internal structure of proteins in the hair.







  1. Cosmetic chemists measure viscosity in poises.







  1. The percent of total solids in most shampoos is less than 10%.







  1. Some hair products today are made from petrochemicals.







  1. Hair products made in small batches behave the same way when they are produced in large quantities.



Reading Strategies


These matrices and organizers are provided to help students locate and analyze information from the articles. Student understanding will be enhanced when they explore and evaluate the information themselves, with input from the teacher if students are struggling. Encourage students to use their own words and avoid copying entire sentences from the articles. The use of bullets helps them do this. If you use these reading strategies to evaluate student performance, you may want to develop a grading rubric such as the one below.

Score

Description

Evidence

4

Excellent

Complete; details provided; demonstrates deep understanding.

3

Good

Complete; few details provided; demonstrates some understanding.

2

Fair

Incomplete; few details provided; some misconceptions evident.

1

Poor

Very incomplete; no details provided; many misconceptions evident.

0

Not acceptable

So incomplete that no judgment can be made about student understanding





Download 491.66 Kb.

Share with your friends:
1   2   3   4   5   6   7   8   9   ...   20



The database is protected by copyright ©ininet.org 2024
send message
    Main page
three types
microsoft word