Applying the principles of expansion and contraction in matter BY Clandestinely Theme: Energy Learning Area: 2. Heat Learning Objective: 2. 4 Applying the principles of expansion and contraction of matter Learning Outcome: A student is able to: Apply principle of expansion and contraction of matter in solving simple problems Materials: Activity sheets 1 - 5.
(provided to the groups during the previous classlessness papers and marker pens, LCD projector Teacher: Good morning boys and girls. What have you learnt yesterday?Teacher waits and listens to students' response. Good, now let me show you some examples related to the principle of expansion and contraction of matter in solving simple problems. Teacher shows the following graphics.
(gaps in railway tracks, rollers in steel bridges, gap in concrete highways, Joints between metal plates in construction works, bimetallic strips in fire-alarms, thermostat, steel railway wheels) Now let us enjoy ourselves with more examples related to the principles of expansion ND contraction of matter by watching five short sketches.Each group will be provided with mahjong's paper and a marker pen. Please identify and write down the keywords related to the concept learnt while you are watching. Remember, marks will be given to the sketches and keywords. Are you all ready? So, we shall begin the sketch. Enjoy yourselves.
Students get into groups. Each group is given 5-10 minutes to present their short sketch. Other groups will watch and write the keywords related to the principles of expansion and contraction on their mahjong's paper.Note: Keywords are underlined. At the end of the class session: What have you learnt Just now? (Teacher waits and listens to students' responses. ) Now let us see wanly group gets ten most Keynoters ruling The points will be added to the group's performance.
Teacher and students will count the correct keywords for every group . Now, I am going to announce the winners of our competition. The third place is awarded to group number The second place goes to group numberAnd the winner is group number Congratulations to all of you. Can you name some other problems that are related to the principles of contraction and expansion in our daily life? Teacher waits and listens to students' responses.
You can get applications of principles of contraction and expansion of matter from the Internet and reference books. Make notes of these examples in your exercise book. Through science, we learn to solve existing problems and make our world a better place to live in. Have a good day.
