Have students play Cell Command with their partners for approximately 30 minutes. Students should continue where they left off with the previous game by clicking the resume button. At this point, you may want to encourage students to play specific cell stations, such as the Duplication Station or the Ribosome Station, to explore particular cell functions.
Pause and Think
Ask students to pause the game after about 15 minutes, and ask them to share how the experience is different from the previous game play sessions. Ask the following questions related to organelles:
- What is the role of ribosomes in the Ribosome Station?The ribosomes were used to assemble proteins by completing peptide chains with the appropriate amino acid sequences.
- What is the role of the mitochondria in the Mitochondrion Station?The mitochondria were used to digest food molecules and generate energy in the form of ATP for the cell.
- What is the role of the cell membrane in the Membrane Station?The cell membrane was used to keep harmful materials from entering the cell and to allow healthy materials to enter.
- Discuss the role of any other organelles in stations that you have completed.Answers will vary.
- What materials could you use to model the organelles?Answers will vary.
Discuss students’ responses to questions A and B as a class.
Hands-On Activity: 3-D Cell Model
Have students read the activity description in the Student Guide as you distribute the materials. In addition to the materials listed, you may distribute other items that can be used to mimic cell organelles. If polystyrene balls aren't available, students can draw an outline, representing a cell wall, and place the materials within it to represent organelles. Let students know that they can refer to the cell diagram from earlier in the lesson, but they should try to use it as little as possible. As students work on their models, circulate to help as needed.
Have students complete the Exit Slip activity in the Student Guide and submit the activity before leaving the classroom. Review the student responses before the next lesson.