Give short explanations. Third grade students are young and thus have a short attention span. Teachers must take this into account when giving lessons in science. A lecture becomes boring to a third grade student, so teachers should keep the lectures to concise explanations. For example, tell the students that the moon is a sphere or circular shape and gets its light from the sun. Give a brief description of the sun and how it differs from the moon. Move on after the brief explanation to something more physical to illustrate the point.
Provide students with worksheets related to the topic. For example, if the class is studying the human digestive system, have the students color a picture of the area of study, like the heart or stomach. Otherwise, students can draw their own pictures.
Work on class experiments. Class experiments in the third grade are led by the teacher. The teacher should explain the experiment and ask the class what they think will happen. The teacher then conducts the experiment and shows the students what happens. This effectively illustrates the area of study.
Assign students a science fair project. Tell the students to pick a project. The teacher can either provide a list of options or can make the students come up with their own project ideas and submit the idea for approval. The students then have a time period to work on their experiment before bringing it to class. This gives the students hands on experience with making a hypothesis and testing their ideas.
Show videos when they are appropriate. For example, if teaching about the water cycle, a teacher might use a video on the topic to show the water cycle in a way to helps the students understand and gives the students entertainment.