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Delaware Grade 3 3.4 People utilize a variety of resources to meet the basic and specific needs of life. Some of these resources cannot be replaced. Other resources can be replenished or exist in such vast quantities they are in no danger of becoming depleted. Often the energy stored in resources must be transformed into more useful forms and transported over great distances before it can be helpful to us.

3.4.1 All students will be able to: Investigate and describe how moving water and air can be used to make objects and machines, such as a waterwheel and windmill, move.