At the secondary level educators encounter a wide variety of students in their classes. The populations of today’s classrooms are growing in both size and diversity. Teachers are seeing a variety of students with different languages, motivations, abilities, and ethnicities. Overcrowding of student is also a big concern among science teachers. According to the National Center for Education Statistics, the average class size for the United States is approximately 25 students. Science classes are also becoming more inclusive, which means that students with disabilities are placed alongside their peers in a traditional setting. Because of this educators’ experience students in the classrooms that may be classified as having a disability, classified as gifted, or may fall somewhere in between. In an average classroom with 15-year-olds, an educator should expect to have students with a 10-year range of reading level. With the large diversity and number of students, it is difficult for one teacher alone to effectively reach every student in the classroom with traditional instruction. Most commonly, teachers “teach to the middle” for the average student; however, this affects all students in the classroom. The students that may face difficulties in the science class are often getting left behind with this type of teaching. Students that may have a higher ability for science are often bored with the material as it is not challenging enough for them. Because of this, they are not engaged and have a lack of motivation which can lead to poorer results.