Addition in the range of 3 Class: 1 Time: 35 minutes
I. AIMS: To help students with 1. Knowledge:
- Recognize Addition in the range of 3
- Forming a basic definition of addition.
- Forming and memorizing simple addition up to the number 3. 2. Skills:
- Knowing how to do addition through pictures, math manipulatives, to set the
number up properly and to do accurate math addition.
- Practicing calculation skills and interpreting math questions.
- Read and write the result of addition in the range of 3 in the language of mathematics 3. Attitude:
- Inspiring students to love math through related activities. Educating students’
carefulness when they calculate. II. TEACHING RESOURCES: 1. Students:
- Math textbooks, Math practice manipulatives, counting sticks, math notebooks 2. Teacher:
- Virtual lesson plan, projector, counting sticks, candies, etc.
III. METHODS AND TECHNIQUES: 1. Methods
- Observation, student group discussion, to surey. 2. Techniques:
- Mindmap, Tablecloth technique. IV. Vocabulary: Words Spelling Meaning Total (n) tə ˈ ʊ.təl/ [count]
the number or amount of everything counted Sum (n) s m/ ʌ [count]
the result of adding two or more numbers together;
a simple problem in mathematics - usually plural Altogether /ˌɔːl.təˈɡeð.ər/ in total Increase( n ) /ɪnˈkriː s/ [count]
the amount by which something is made larger or greater Combine / Kəm ba ˈ n/ ɪ to ( to) cause
exist together, or join together to make a single thing or group V. PROCEDURES Time Contents TEACHER’S ACTIVITIES STUDENTS’ ACTIVITIES 3’ I. Class room Teacher lets students sing the Students sing the settlement: counting song counting song Object: Create a
Teacher asks students to One assigned student comfortable compare goes to the board and do mood for the exercise students, The rest of students draft combining with 6 ... 8 4 .....4 the exercise checking old 9......5 3 .....6 lessons Comments and supplementation - Method: game II.New lesson 15’ 1. Introduction: Teacher gives comments Teacher writes the lesson 2.Activities title on the board.
1: Introduction of In the last lesson, you had learnt addition and
how to compare groups of objects addition table up
and numbers. So today, we will to the number 3. learn a new lesson, which is ( Addition
“Simple addition up to the number - Students observe the 1 + 1 = 2) 3” picture and answer: Object: Students + One chicken plus one know how to do
- Teacher hangs the picture and chicken equals two the calculation asks students: chickens 2+1, 1+2
There is one chicken. If one more - Some students repeat - Method: chicken is added, how many the answer +Question and chickens do we have? - One plus one equals answer two +role – playi - One plus one equals what? This is how we write 1 plus 1 - Students repeat equals 2 1 + 1 = 2 - 1 plus 1 equals 2
Addition in math is a process of Students interpret the combining two or more numbers. question
The symbol “+” is called the plus sign
- Teacher reads out the addition to + There are 2 cars. If one
students and then assigns students car is added, how many to repeat the addition. cars are there?
Teacher hangs a picture of 3 cars - There are 3 cars on the board and let students - 2 plus 1 equals 3. interpret the question by themselves. 3 students repeat the addition
- 2 cars plus 1 car equals what? Students interpret - 2 plus 1 equals what? question
- Teacher hangs the picture of 3 1 turtle plus 2 turtles. turtles and lets the students How many turtles do we interpret the question have? - 1 plus 2 equals what? - Teacher writes on the board: - 1 plus 2 equals 3. 1 + 2 = 3 Students repeat the - Teacher hangs the picture of answer numbers in the form of dots:
- Students interpret the question by themselves
- Teacher lets students compare 2 addition: 2 + 1 = 3 - 2 dots plus 1 dot equals 1 + 2 = 3 3 dots. 1 dot plus 2 dots equals 3 dots.
? Teacher asks: Do you have any comments on these 2 addition? Teacher: When we switch the
position of numbers in addition, the sum remains unchanged. - The similarity: both are
- Teacher assigns students to read additions, both contain out loud the addition table the numbers 1, 2 and 3.
- Teacher lets students read out the The difference: the table unanimously and then number 1 and the number Activity 2: gradually erase it. 2 switch their positions Memorize the with each other addition table of - Teacher asks: 3’ - 6 students read out the number 3 1 plus what equals 2? table. What plus 1 equals 3? - Students read out the 1 + 1 = ? 1 + 2 = ? 2 + 1 = ? table unanimously. 1 + ? = 2 1 + ? = 3 ? + 1 = 3 Teacher erases the whole addition table on the
- Students volunteer to read out the board. Students are formula by their memory. expected to memorize the Activity 3: table. Practice Ex. 1: Do the addition - Students quickly - Object: Observe Teacher assigns a student to respond to the questions the model to state 12’ interpret the question the number, compare the
1 + 1 = … 1 + 2 = … 2 + 1 = … - Students read out the results of the two addition table of number calculations just three by their memory. Teacher gives comments formed 1 student repeats the question, and write his - Method: answer on the board +Individual activities The whole class does the +groups addition in their +worksheets textbooks +games Students give comments Ex. 2: Do the addition on their peer’s answer. Teacher assigns students to interpret the question
- Teacher instructs students how to - Students listen to the
correctly set the number up and do teacher the vertical addition. - Students do and correct their own exercises. + 1 1 + 1 + 1 2 2 - Students do the exercise 2 3 3 in their notebooks Teacher gives general comments - 3 students write the vertical addition on the ? What do you need to keep in board and do the mind when doing addition? calculation.
- You need to write the sum lining Students show their up with the two addends. results and give + Ex. 3: Match addition with additional comments correct numbers Teacher reads out the question
Teacher organizes a game called:
“WHO’S FAST, WHO’S RIGHT” 2 teams start to play Teacher disseminates the game
rules: There’ll be 2 teams and Students give comments they’ll play in relay - Students do the exercise Teacher gives comments in their notebooks
? If you want to match the correct
information, what do you need to do? III.Consolidation
What have we just learnt today? - Reminder
Could you please repeat the formula 2’
of addition up to the number 3?
- Teacher gives comments on the lesson. 1 student answers the question
Teacher asks students to memorize the formula at home 2 students read out the addition table up to the
- Teacher asks students to prepare number 3 for the next lesson at home