STAAR Questions For BP/FP of Water

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STAAR Test Questions about the Boiling and Freezing Points of Water are shown on this page.

Question 2 FP water

Please contribute teaching ideas for TEKS 5.5B , which is for students to know the boiling and freezing point of water in Celsius degrees.

Teaching Ideas:

1. Start using Celsius degrees to record the daily temperature.

2. Point out that the daily temperature describes the weather.

3. Students need to know what ambient temperature is (the temperature around them). Room temperature is the ambient temperature of the room.

Activity: Assign students to be responsible for measuring the ambient room temperature for a period of time.

Ask students to record the measured room temperature in their science notebook. Binders allow students to add materials. You might have them to have a divider for weather. Using at least 5 days, ask the class to calculate the average ambient temperature of the classroom.

The class can then determine the average 55.B BP STAAR 2013the ambient room temperature using at least temperature reading for 5 days. Note: Reading should be taken at the same time, beginning of the class.

Activity:
Students can make a model of a thermometer. Freezing point and boiling point of water needs to be marked on the model.
Celsius Thermometer Model5.5 B boiling point

Students should be prepared to read the temperature from a diagram of a Celsius Thermometer.

Since the STAAR tests are to encourage critical thinking, I discussed the inaccuracy of question #2 on the 2011 STAAR test with a TEA representative.The response was that it doesn’t make any difference where water samples are taken, the boiling point of the water would be 100 C or close to it.

Parents and Teachers,

Know that you cannot trust the STAAR tests to be correct nor to represent the correct science process skills. TEA does not respond with a positive attitude to questions about errors on the STAAR tests. This is because admitting an error has been made means student grades have to be changed. Thus, not to spend money to change student grades, TEA just stops responding to inquiries about incorrect questions. This results in students having an incorrect score on their permanent records.

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Comments

  1. Simple is not generally a good thing in science, it usually leads to things being incorrect in a way that is hard to fix when these students get older.

    Teaching and testing it as if it were that simple is a big part of what is wrong with the system. The question says nothing at all about whether they are all even fresh water. The dissolved content of water can make a big difference in the properties. If I live on the gulf coast, why would I assume that the water is not saltwater?

    The boiling point of saltwater really is not that much higher than 100 degrees, even for a saturated solution, but it is still bad science to make such assumptions.

  2. Scott Klump says:

    TEA is correct water is water is water (as far as a 5th grader knows). 5th graders should know water boils at 100 c. It’s that simple!

    • Janice VanCleave says:

      5th graders are to be taught to think critically about science investigations. It would have been better if the question has simply stated that the samples come from the same water source. 5th graders are to do science projects in which the source of the samples could make a difference. So, to a scientists, not all water is the same. Since 5th graders are learning the scientific method, then they must learn that all water is not the same. TEA should know this.