Math 1 Lesson: Eleven, twelve
1.1. Knowledge to remember
– Recognize the structure of the numbers 11, 12, including how many tens and how many units.
+) Number 11 includes 1 tens and 1 unit.
+) Number 12 includes 1 tens and 2 units.
– Read and write the number 11; twelfth
1.2. Mathematical forms about Eleven, twelve
Form 1: Count the pictures and write the corresponding number.
– Count the number of given objects and write the corresponding number.
+ 1 dozen add 1 unit to make 11.
+ 1 dozen add 2 units to make 12.
Form 2: Fill in the appropriate number in the number line.
I determine the distances divided on the number line, equidistant from several units and then count and fill in the corresponding numbers.
Form 3: Compare, calculate within 11.
I memorize the order of numbers from 0 to 11.
1.3. Solving Textbook Exercises
Lesson 1 page 101
Fill in the blanks with the correct number:
Count the number of stars in each picture and fill in the blanks with the correct number.
1 tens add 1 unit equals 11.
1 tens add 2 units equals 12.
Lesson 2 page 102
Draw more dots (according to the pattern):
Draw the number of dots in each box corresponding to the given number of tens and units.
For 1 dozen, draw 10 circles.
Lesson 3 page 102
Color 11 triangles and 12 squares:
Count the number of triangles and squares by the given number.
Lesson 4 page 102
Enter a number under each line of the number line:
Count forward starting from 0 and then fill in the missing number in the number line.