Friday, July 13, 2012
Chapter 7 - Reflective Assignment
Many times educators use the exams/tests which come with the curriculum, but there are times when we need to create our own assessments. Learning to write a good assessment come with practice. The author gives guidelines to help you learn to create quality test questions. Complete Exercise 7.1 found on pages 287-288. You might want to write this assessment for your Unit of Study (Chapter 6) so it may be more meaningful.
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Exercise 7.1 Preparing Assessment items
ReplyDeleteObjective: Students will be able to determine protons, neutrons, electrons, mass number (atomic mass), and atomic number from the Periodic table.
Grade and Subject: 9-12 Physical Science
1. Arrangement item: Arrange the following items protons, neutrons, electrons pertaining to their weight with the least heavy first. Then list which of the three (protons, neutrons, electrons) make of the mass number and atomic number.
2. Complete Drawing item: An element on the periodic table consists of specific items, numbers, and symbols to describe each particular element. Label which item is the atomic number, the symbol of the element, the name of the element, and the atomic mass. (picture shows helium on top, #2 below it, He symbol below that, then 4.003 below that.-picture did not copy and paste over correctly).
3. Completion statement item: Fill in the blank for the following sentence.
The Atomic mass = # of _____+ # of _______.
4. Correction item: Read the passage below. If the underlined words are correct write okay above the word. If the underlined word is incorrect please cross it out and right the correct word above it.
When using atomic mass, always round to the largest whole number.
Atomic mass - # of protons (Atomic number) = # of electrons.
5. Essay item: From what you have learned from your notes and lecture, explain what the atomic number of an atom is, what the atomic mass of an atom is, and where are each found respectively on the periodic table.
6. Grouping item: Figure out the number of protons for the 10 elements given and group them in the correct family or column they would belong in.
7. Identification item: Identify which row on the periodic table the following elements would be by their atomic mass.
8. Matching item: Match the number of protons on the left with the correct element symbol on the right.
9. Multiple-Choice item: Which of the following is the correct atomic mass of Carbon?
a. 7 protons + 7 neutrons = 14.
b. 4 protons + 6 neutrons = 10.
c. 5 protons + 7 neutrons =12.
d. 6 protons + 6 neutrons =12.
10. Performance item: Calculate the number of neutrons and the number of electrons for elements in the whole row starting with the element Cs (Strontium).
11. Short-explanation item: Explain briefly what the atomic mass is and what it is measured.
12. Modified true-false item: Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true.
The number of neutrons in the nucleus of an atom is what determines the elements position in the periodic table. T or F?