Grade: IX Time: 50 minutes
Subject: Chemistry Topic: Alkaline Earth Metals
Student Learning Outcomes
At the end of this session students will be able to:
-Tell the names of the Alkaline Earth Metals
-Tell the characteristics and uses of Alkaline Earth Metals
Required Material
Board, marker, duster, Book, reading material, worksheets
Motivational Activity (4 minutes)
-After the formal greetings, teacher will ask students that how many groups are there in Periodic table and ask the specific names of the groups, like, Alkali metals, Alkaline Earth Metals etc.
Introductory Activity (12 minutes)
-The teacher will tell students a story about Alkaline Earth Metals. The story is given in Appendix “A”
-Then, teacher will ask students that which group’s story was that from periodic table and what was the story all about and she will get responses from different students. Then, teacher will elaborate the story further.
Activity 1 (24 minutes)
-Teacher will make 5 groups of 4-5 students
-Teacher will provide reading material that explains the characteristics and uses of Alkaline earth metals and students will be asked to read and discuss it for 10 minutes
-Each group will be called to share their understanding. Each group would have 2 minutes time.
-Teacher will elaborate wherever she will feel the need to explain
Conclusion (3 minutes)
-Teacher will ask students about the key points of the session
-Teacher will conclude the session
Assessment Activity (7 minutes)
-To assess the learning of the students, teacher will provide worksheet individually to students. The worksheet contains MCQs related to the topic.
Reference Material/Resources
-Sindh Textbook of Chemistry for Class 9
-https://www.thoughtco.com/alkaline-earth-metals-properties-606646
-http://www.scienceforkidsclub.com/alkali-metal.html
Appendix “A”
Alkaline Earth Metals-A Story
Once upon a time, a periodic table has an alkaline earth metals gang. They would like to brag about each element in their group. Beryllium said, "I am used in springs and windows for X-Ray tubes". Other element named Magnesium was annoyed and said, "Don’t you know I am better than you? I’m used in the blood, structural purpose in car engines, pencil sharpeners and in many electronic devices. Also my atomic number is 12."Berilium replied, "Although my atomic number is 4, I am first element in group 2.""Hahahaha! I am used in the maintenance in of bones, leafy green vegetables, milk and cheese." Interrupted Calcium. Calcium continued, "My atomic number is 20. It’s more than both of you. “Strontium intruded and said, "What a pity! My atomic number is 38. It's bigger than of yours. Moreover, I am used in color television picture tubes and fireworks as it produces a scarlet flame color. Just My luck!” “Ahh! What a nuisance!” Barium appeared and said loudly. Barium Continued, “My atomic number is 56. I am used in the industry of glassmaking. That’s why I am superior hahahaha!” “Stop Arguing" intervened Radium. Radium continued, "My atomic number is 88, it’s the highest in group. I can change color from white to black when I expose to air. I am superior in this group not Barium and I don’t brag. You all can be considered equal since you are all in Alkaline Earth Metals" "Ohh! I see. We are metals, we have two electrons in our valence shell." Said barium. "I am agreed with both of you. Moreover, we have low electron affinities and low electro negativities." said beryllium. "And we have high melting and boiling points." Said Calcium. "Yeah! We are Alkaline Earth Metals. Let's Celebrate!" Exhilarated Magnesium.
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