Dotty Bug and her Designs
NCERT Solutions for Class One Mathematics Dotty Bug and her Designs
Making 10
Have you seen a ladybug? 🐞
She has dots on her body. Have you ever noticed the number of dots?
A. Write the number of dots on each bug.
Answer: Do YourSelf see pictures in text Book
answer : 4 , 5 , 6 , 3
B. Make some dot designs with objects like tamarind seeds, pebbles, buttons, bindis, etc., and identify the number of dots in each arrangement.
Answer: Do YourSelf see pictures in text Book
answer : 4 , 5 , 3 , 4, 6
C. Identify and write the numbers formed by the arrangement of the red bindis.
Answer: Do YourSelf see pictures in text Book
5, 3, and 4
D. Play with your friend. Roll the dice and colour a box with the same number of dots as on the dice. Take turns with your friend and roll again.
The child with more number of coloured boxes will win.
Answer: Do YourSelf see pictures in text Book
Use the dot and colour flash cards to help children gain instant recognition of numbers without counting. This is called subitization. Make more cards with dot patterns of numbers 1 to 9 in different designs and sizes as required.
Buttons
Discuss the number of buttons left on the shirt at the end. Ask children to name objects, things around them whose number is zero. Let children understand that zero is also a number like one, two, and other numbers. Discuss with children about the benefits of a balanced diet and the ill effects of overeating.
Vanishing Buttons
Gola monkey 🐒 wears his favourite shirt with four buttons. He went to the garden and ate too many bananas as he was fond of them. What do you think happened then?
One of the buttons popped out and rolled away. But he cannot dream of giving up bananas and he keeps on losing all the buttons one by one.
Four, Three, Two, One, Zero
Use concrete objects to demonstrate the idea of zero by reducing one object each time. Discuss the situations where something is absent and its number is called as ‘zero’ like there are 0 buses in the classroom. Also, encourage children to count backwards from 5 to 0 initially and later from 9 to 0.
Write the number of birds sitting on the branch of the tree.
Answer: Birds see in the pictures of text book and count. in first pictures Three Birds sitting on tree branch and In second pictures two and In third pictures one and In last pictures Zero.
A. How many suns do you see in the night?
Answer: 0 🌞
B. How many moons do you see at noon?
Answer: 0 🌜
Write ‘0’
Think and Tell
She has lighted diyas on her birthday. 🎂
Count and write the number of objects.
Tenth Birthday
It is Aastha’s tenth birthday. Her father prepared halwa for her. She is celebrating the birthday with her friends. 🎂
Beads: 🎨
Laddoos: 🍡
Crayons: 🖍️
Bananas: 🍌
Leaves: 🍃
I am 9 years old and after 1 more year, I will be 10 years old. So, 9 and 1 more makes 10.
Let us Do
A. Count and draw beads to make a string of 10 beads.
Answer: i. 6 ii. 7 iii. 4 iv. 2
How many beads you make to Complete 10 on string.
Answer: i.10 - 6 = 4 ii. 10 - 7 = 3 iii. 10 - 4 = 6 iv. 10 - 2 = 8
B. Draw buttons to make a ten frame of buttons.
Answer: i. 10 -3 = 7 ii. 10 - 6 = 4 iii. 10 - 2 = 8 iv. 10 - 1 = 9
The Handy Five and Ten
Show 3 fingers. Your friend has to show some fingers to make it 5.
Follow the pattern and write the number pairs separated by the stick.
Answer: _1_ and _4_
Answer: _2_ and _3_
Answer: _3_ and _2_
Answer: _4_ and _1_
Answer: _5_ and _0_
Number Pairs of 10
Let us play the finger game with our both hands. A child will show some fingers. The other child has to show the other fingers that are folded.
Follow the pattern and write the number pairs in the given table.
1 and 9 = 10
_2 and 8_ = _10_
_3 and 7_ = _10_
_4 and 6_ = _10_
_5 and 5_ = _10_
10 and 1 is 11 Eleven
10 and 2 is 12 Twelve
10 and 3 is 13 Thirteen
10 and 4 is 14 Fourteen
10 and 5 is 15 Fifteen
10 and 6 is 16 Sixteen
10 and 7 is 17 Seventeen
10 and 8 is 18 Eighteen
10 and 9 is 19 Nineteen
10 and 10 is 20 Twenty
Help the children to count concrete objects up to 20 using groups of ten and units. Give them a handful of seeds or buttons not more than 20. Ask them to guess the number first, then group and count. How close was the guess? Let children reason out the basis for their guesses.
Answer: YourSelf see in text Book
Write the numbers 11–20.
Answer:
Numbers from 11 to 20
- Eleven
- Twelve
- Thirteen
- Fourteen
- Fifteen
- Sixteen
- Seventeen
- Eighteen
- Nineteen
- Twenty
Colour the tens frames to show the number.
14, 19, 16
Write down the numbers in sequence.
1, 3, 8, 6, 9, 12, 15, 20
Count and Write
A. Count and write the answers.
Encircle a group of ten in the pictures and match with the number.
E. A group of friends while playing built some towers.
i. Tick the tallest tower.
Answer: YourSelf see in text Book
ii. Which tower used the most number of blocks? Write the number of blocks used in it.
Answer: YourSelf see in text Book
iii. Which tower used the least number of blocks? Write the number of blocks used in it.
Answer: YourSelf see in text Book
Let children find out their ways to decide which number is bigger. Ask them why have they decided so. The children must understand that 15 is bigger than 11 because it is 4 more than 11 and similarly for other numbers up to 20.
Answer: YourSelf see in text Book
Let children find out their ways to decide which number is bigger. Ask them why have they decided so. The children must understand that 15 is bigger than 11 because it is 4 more than 11 and similarly for other numbers up to 20.
Answer: YourSelf see in text Book
A. Circle the smallest number.
i. 8, 12, 6
Answer: 6
ii. 14, 11, 19
Answer: 11
B. Circle the biggest number.
i. 16, 19, 11
Answer: 19
ii. 11, 17, 9
Answer: 17
C. Find the numbers hidden under the paw.
Answer: YourSelf
D. Write the numbers from the biggest to the smallest.
11, 3, 16, 20, 13, 9
Answer: 20, 16, 13, 11, 9, 3
Encourage children to recognise the group of 10, while counting the objects beyond 10.
Answer: YourSelf
Project Work
A. Find out the things from your surroundings that are in the group of 10. For example, bindi cards having bindis in the groups of 10.
Answer: YourSelf
B. Ask children to make their own number cards 10 to 20. They can use old cardboards, waste materials, etc.
Answer: YourSelf
Is it an animal or a bird?
Answer: YourSelf see in text Book
Let us count and write.
i. Number of blocks
Answer: YourSelf see in text Book
ii. Number of white dots
Answer: YourSelf see in text Book
Join the numbers from 1 to 20.
Answer: YourSelf see in text Book