I. TEACHER INFORMATION

Title of lesson: Sedimentation

Topics:

Math- Problem solving, Number properties

Science- Natural Events, Experimenting

Student Level: 3rd grade

Objectives:

1. The student will perform an experiment using a step-by- step procedure over sedimentation.

2. The student will describe the layers after 5 minutes, 10 minutes, 30 minutes, and 24 hours.

3. The students will participate in a review session over identifying fractions.

4. The students will complete a fraction factory worksheet while waiting to observe experiment results.

5. The students will make predictions of what the results will be and record it in their scientific journals.

6. The students will participate in a group discussion comparing and contrasting predictions with the results and share with the class. They will record the results in their scientific journals.

Materials: sand measuring cups chalk dust
dirt baking soda sedimentation worksheet water jars fraction factory worksheet pitcher spoons bowls for sand / dirt

Prerequisite skills: Prior knowledge of identifying fractions.

Time required: 30 minutes ( Two days required )

II. TEACHING PROCEDURE

Introduction: The teacher will address the class to notice the items on the table and comment that we are going to do an experiment over a natural occurrence that takes place called sedimentation. The teacher will explain what the term means and how it relates to the environment. ( See attached sedimentation sheet. ) The teacher will give the following instructions:

1. Put a combination of 1/3 sand and 2/3 soil in a jar. Mix. Add baking soda and chalk dust to mixture. Mix in a little water to break up the clots. ( like mud pie )

2. Fill bottle 2/3 full of the way with water. Screw cap on jar and shake bottle.

3. Stand jar upright and observe and record data.

Review: The teacher will review identifying fractions with the class by asking the students what fractional portion needs to be shaded in of each control device on the overhead projector. The teacher will tie in the use of measuring cups to relate it with the science experiment.

Strategies: The teacher will place the students in six groups to do the science experiment. The students will make predictions about what the results will show after 24 hours and record them in their scientific journals.

Conclusion: The teacher will lead a group discussion to compare and contrast predictions with actual results of the experiment. The teacher will have each group share with the entire class and record findings in their journals.

Evaluation: The teacher will observe students while working in groups by using a cooperative group checklist. The teacher will observe the completion of experiments and recording data properly on worksheet and in journal.

Extension:

1. Have students study the three types of rocks: igneous, metamorphic, and sedimentary. Provide examples and activities available to enhance interest.

2. Have a filed trip to Castle Rock ad have students find examples of each type of rock and have them write a report on the findings . Display them in lunchroom for all to see.

Resources:

1. Butterfield, Sherri. (1996). Macmillian Instant Activities Program . New York: Newbridge Communications, Inc.