In the second grade students cover many different science topics in their coursework. However, for this lesson plan you will be introducing a 2nd grade science project that will have your students examine pesticides and their impact on insects. This project can be done in one class period or in two.
Goals and Objectives
The objectives of this lesson plan is to educate students about what pesticides are, how they are used and what impact they have on the environment. After completing this exercise students will be able to explain what pesticides are and they will also be able to understand the pros and cons of using them.
Before you begin the guided work for this lesson you will need to introduce a couple of things to your students. First of all you will want to explain what pesticides are and what they are used for. You can enhance this information by playing a short film on pesticides that not only shows the advantages of using pesticides, such as lowering the rate of diseases that are spread by insects, but that also shows some of the side effects of using pesticides like tainting food supply and polluting water sources.
The guided study portion of this lesson will involve a pesticide demonstration and a worksheet/printable. The demonstration is best done outside where there is better ventilation. You will need ants or some other type of insect to test. You will then spray the insect with a pesticide and have the students note what happens. You will then explain how the pesticide works, such as it suffocates them or it poisons them. When you get back into the classroom you will have a guided discussion about pesticides. You can start off the conversion by asking questions like “if pesticides poison insects what do they do to other animals or humans?” To test your students’ understanding of the material that you covered you will have them complete a worksheet about pesticides that covers topics like pesticide safety and pesticide use.
The homework assignment for this lesson will be used to give your students new insights to the alternatives to chemical pesticides. Their assignment will be to write a one or two page essay on an alternative type of pesticide. You can either have your students find their own alternative pesticide to write about or you can assign them one. Students will be graded based on the quality of their writing and researching.