Formulate research questions and hypotheses. Construct models and simulations to describe and explain natural phenomena. Recognize the personal relevance of science in daily life. Students will form hypotheses and observe demonstrations of particle movement. Students will identify variables and describe relationships in simulations of particle movement.
Teacher stands at back of class with students facing forward.
Students are asked to not turn their heads and to raise a hand if they sense something different in the room. Teacher quietly sprays perfume or Pine-Sol, or opens a container of ammonia, or lights a match and burns paper. As the particles move from the area of higher concentration to areas of lesser concentration, the students should be able to sense the substance and raise their hand. Before the particles have reached the front of the room, the teacher asks students to look around, observe the room and those hands that are raised. Shortly thereafter all students should be able to smell the selected substance.