Purpose To introduce students to the measurement of volume with the graduated cylinder and the plotting of information on a graph.
Goal Upon completion of this exercise, 95% of the students will be able to measure objects accurately using the graduated cylinder, graph these results and predict results of other volume measurements using the same materials from a graph.
Procedures
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1. Homework assignment—Lab from Cebco text or make up activity for reading a meniscus.
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2. Oral evaluation of assignment.
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3. Practical:
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a. Have 2 graduated cylinders set up at each lab station. One with a known amount of liquid and the other without any liquid.
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b. On an index card have the correct volume recorded then then invert the card. The student will then write the volume on a piece of paper, invert the card and check his/her answer. if having a problem, individual help will be given.
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c. On an index card, write the amount of liquid to be placed into the cylinder. Check results and give individual help if needed.
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4. Have students set up a graph with number of marbles vs volume of marbles.
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5. Find the volume of 1-3-5-7-9 marbles and plot this information on the graph.
Evaluation
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1. Have the students predict the volume of 2-4-6-8-10 marbles. from the graph.
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2. Have the students find the volume of 2-4-6-8-10 marbles.
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3. Have the students find the percent error which should be less than 3%.
