Lesson Plan on Atomic Number and Atomic Mass

Grade: IX                                                   Subject: Chemistry    Topic: Atomic Number & Atomic Mass   Time: 50 minutes                                                                                                                     

Student Learning Outcomes 

At the end of this session students will be able to:

-Explain the terms Atomic Number and Atomic Mass

-Remember the atomic number and atomic mass of some elements

Required Material

-Board, marker, duster, Book, worksheet, flash cards, periodic table

Motivational Activity (5 minutes)

-After formal greetings, teacher will ask students about what do they know about Atomic Number and Atomic Mass?

Introductory Activity (10 minutes)

-The teacher will tell students what is atomic number and atomic mass and also explain the importance the atomic number and atomic mass

Activity 1 (8 minutes)

-Students will be given periodic table in which students will be asked to go through the atomic number and atomic mass of the elements

Activity 2 (15 minutes)

-Teacher will make pairs of the students 

-Each pair will be provided with 40 flash cards. On one side of the flash card the name of the element is written and on the other side of the flash card the atomic number and atomic mass is written. One student will hold the flash card and show that side on which the name of the element is written to his/her pairmate. Then, that student will be asked to tell the atomic number and atomic mass of that element. Student will give answer and answer will be checked by seeing at back of flash card where the atomic number and atomic mass is written. If the student is successful at telling right atomic number and atomic mass, he/she will get 10 points, if he/she tells one right(either atomic number or atomic mass), then he/she will get 5 points, if he/she tells wrong atomic number and atomic mass then he/she will get 0 points. The same procedure will be repeated with other member of the pair. That student will win, who will tell more right answers.

Conclusion (4 minutes)

-Teacher will ask students about the key points of the session

-Teacher will conclude the session

Assessment Activity (8 minutes)

-To assess the learning of the students, teacher will provide worksheet to students. The worksheet contains MCQs related to the topic

Reference Material/Resources

-Textbook of Chemistry for Class 9