Lesson Plan 2: Physics/Physical Science 1-2

Gas Laws Experienced

Grade: 9 – 12 (can be adapted for younger groups)

Content Area Objectives: Students will discover the relationship between temperature pressure and volume as they perform research and experiments. Practical application – On the farm, in the kitchen, or on the road most of these students will experience the gas laws in action without realization of the fact.

Technical Objectives: 1. Use the Internet 2. Cut and paste graphics to a word document using print screen 3. Word-processing 4. File management

Materials Needed: 1. Computer with word processing 2. Printer access 3. Pressure cooker 4. Lunch items to cook such as roast and vegetables 5. Hot plate 6. Empty pop cans

Advance Preparation: 1. Find recipe for cooking meat in pressure cooker. Divide lunch items among students and have them bring lunch items on the appointed day. 2. Save Internet sites on Word document for students to access. 3. Students should have basic word processing, file management and Internet skills.

Activity Description: (will take several days) 1) Students will be introduced to three basic gas laws: a) Boyle’s Law b) Charles Law c) The Ideal Gas Law 2) Discuss everyday examples of gas laws in action. a) Driving a car, cooking, processing food, hot-air balloon, filling gas cylinders, breathing, … 3) Discuss cooking with pressure: a) What is held constant? (Volume) b) What will change? (Pressure and Temperature) c) Why will food cook faster? 4) Plan cooking activity as experiment to justify hypothesis’ of three. a) Assign persons to bring the following i) Cooker ii) Meat

Johnny Piper /Building Bridges with Technology Boise State University 5/7/2018 Lesson Plan 2: Physics/Physical Science 2-2

iii) Vegetables iv) Hot plate v) Drinks vi) Utensils b) DO IT!!!!!! 5) With two students at each computer, they will open a document saved on the network that possesses links to Internet sites with interactive capabilities. a) Students will open a blank Word document, put their names on it, and save it to a selected network folder. When changes are made they will resave the document immediately. b) Students will select variables to change (pressure, temperature or volume) and observe the results on the other variables. c) After observations and discussion in their group the students will do a print screen, save it to the open document and write a brief report on their findings. d) When all variables have been manipulated in each site and the reports finalized, students will print their reports to be turned in to the teacher. 6) Another lab to do involves the use of pop cans, Bunsen burners and a pan of cold water. a) Students boil a small amount of water in a pop can creating steam in the can b) When the water has boiled, students use gloves or tongs to turn the can over and place it in the water so that the opening is submerged. c) The steam has replaced the air and as it condenses will take up less space and so the outside air pressure will crush the can.

Learning Issues: Students should have word processing, file management and Internet skills. They should also be able to make inferences based on new information (identifying everyday use of gas laws).

Resource Management: 1) One computer for two students. 2) All students will be at the computer at the same time. 3) Computers were located along one wall, the cooking was done close to the door (easy access to a fire extinguisher) away from the computers. 4) If computers are not available in the room, time can be arranged in the computer lab and instructions included with the document students will access to obtain the Internet sites. 5) The older students are the less direct supervision they will need. Younger students may need to do the Internet activity as a class using a projector connected to the computer.

Assessment: 1) Invite the Principal to judge the lunch. 2) Compare reports on the gas laws with the gas laws themselves. Check to be sure that correct variables were manipulated for the specific gas laws when students accessed interactive Internet sites.

Johnny Piper /Building Bridges with Technology Boise State University 5/7/2018