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What are size words? Size words are simple words that tell us how big or small things are. Children hear these words at home and in school. When we say 'big', we mean the thing takes up more space. When we say 'small', we mean it takes up little space. Other size words tell us about height, length and width.
To begin, the teacher shows two objects that are easy to compare, for example a big ball and a small ball. The teacher holds up one object and says the word clearly, then holds up the other and says its word. Children copy the words and point to the right object. Repeating this often helps pupils remember the words. Use real classroom items so children can touch and feel the difference.
Make learning active. Ask children to stand up tall and then crouch down short. Use pictures that show animals, toys and plants of different sizes. Encourage children to speak one-word answers at first, then short phrases like 'It is big.' Keep sentences simple and repeat them many times. Short activities of two to five minutes work best for young children.
Give praise for every attempt. This builds confidence and makes children willing to try new words. Use songs or a short story with size words to help children enjoy the lesson and remember the new words easily.
Big and small are among the first size words children learn. Big means something that takes more space or looks larger. Small means something that takes less space or looks smaller. To teach these words clearly, use objects that are familiar to children, such as a big shoe and a small shoe, a big book and a small book, or a big chair and a small stool.
Start with a simple show-and-tell. Place two objects on a table and say the words slowly: 'This is big.' Point to the larger object. 'This is small.' Point to the smaller object. Ask children to repeat after you. Repeat the activity with different items so children see the idea again and again. Use pictures too: show a picture of an elephant and a picture of a mouse and ask which is big and which is small.
Make a small game: put several items in a basket and ask each child to take out a big item or a small item when you call. Use praise like 'Good!' and 'Well done!' to encourage participation. For older or more able children, ask short questions such as 'Which is bigger: the ball or the cup?' and let them answer in a phrase: 'The ball is bigger.' Keep language simple and fun. Regular practice helps build a strong understanding of these basic size words.
Tall and short describe the height of people, animals or objects. Tall means higher in height. Short means lower in height. Use examples children meet every day: a tall tree and a short flower, a tall teacher and a short child. Show both real items and pictures.
Begin with a demonstration. Ask one child to stand up and stretch tall like a tree. Ask another child to crouch down small like a kitten. Say the words 'tall' and 'short' clearly as the children show the actions. Encourage the class to copy this movement. Moving the body helps children remember the words better. Repeat the action and ask different children to try.
Use classroom objects too: compare a tall pencil to a short pencil, a tall cup to a short cup. Ask simple questions such as 'Who is tall?' and 'Who is short?' Let children answer in one or two words at first, then form short sentences like 'Rita is tall.' Use pictures showing people or trees of different heights and ask children to point to the tallest and shortest. Praise every correct answer to build confidence and keep lessons short and lively for young learners.
Long and short
Start with two objects: a long ribbon and a short ribbon. Lay them side by side on a table and say, 'This ribbon is long.' 'This ribbon is short.' Ask children to point. Next, give small groups a set of two or three items and ask them to find the longest and the shortest. Encourage simple words like 'long' and 'short' to describe their choices.
Use drawing to reinforce the idea. Draw a long line and a short line and ask children to point to the long one. Use real-life examples: a long road versus a short path, a long snake in a picture versus a short worm. Ask questions such as 'Which is longer, the pencil or the eraser?' and let children answer in short phrases. Keep activities brief and varied so children remain interested. Repeating the words with objects, movement and pictures helps children remember the meaning of long and short.
Thin and thicknarrow and wide
Show a thin book and a thick book. Let children feel the books with their hands and say the words aloud. Then show a narrow strip of paper and a wide sheet; let children hold them to understand the difference. Use simple language: 'This is thin.' 'This is thick.' 'This road is wide.' 'This path is narrow.' Repeat each pair of words many times in different contexts so children hear them often.
Make a sorting activity: place many objects on a tray and ask children to put thin objects in one pile and thick objects in another. For narrow and wide, show pictures of streets and bridges and ask which is narrow and which is wide. Use gestures to show width — stretch arms wide for wide and bring hands close for narrow. Short, active practice with praise helps children learn these size words quickly and enjoyably.
Comparing is the skill of looking at two or more things and saying how they differ in size. Begin with two items because two is easiest for young children to compare. Place a big ball and a small ball on a mat. Point to each and ask, 'Which is bigger?' and 'Which is smaller?' Encourage answers like 'The ball is bigger.' or simply 'Bigger.' Use the words 'bigger' and 'smaller' often so children learn the comparative forms.
After practice with two things, introduce three items to add a little challenge. Put three blocks of different sizes on the table and ask the class to find the biggest, the smallest and the middle one. Show them how to arrange the three blocks in a line from smallest to biggest. Let every child have a turn to order the blocks; hands-on activity makes the learning real.
Use pictures and real objects together. For example, show three pictures of trees: small, medium and tall. Ask questions like 'Which is the biggest?' and 'Which is the smallest?' Encourage children to use full short sentences such as 'This tree is the tallest.' or with help, 'This tree is bigger than that one.' Keep language simple and offer models they can copy.
Make comparisons a game: time a quick ordering race, sing a short song about sizes, or play 'Find the biggest' in the classroom. Praise correct answers and gently correct mistakes by modelling the right phrase. Repeating these activities across lessons helps children become confident at comparing two and three things using size words and simple comparative phrases.
Putting size words into sentences helps children speak clearly. Start with short, complete sentences such as 'The cat is small.' and 'The dog is big.' Show a picture and read the sentence aloud while pointing to the picture. Ask children to repeat the sentence after you. Repetition helps them learn the sentence structure.
Practice short question-and-answer pairs. The teacher asks, 'Is the box big?' and the child answers, 'Yes, the box is big.' Model both 'Yes' and 'No' answers so children learn to respond correctly. Use pair work so each child practices speaking with a friend. Give gentle correction and praise to keep confidence high.
Use short poems, rhymes or chants that include size words and ask children to act out the lines. For example, they can stand tall or curl up small. Ask children to make their own short sentences about classroom objects: 'My pencil is long.' Encourage drawing a picture and writing a simple label like 'big house' underneath with teacher help. These activities link speaking, listening and early writing and make learning size words meaningful and fun.
Games and activities make size words fun and easy to remember. Use sorting games where children place objects into 'big' and 'small' baskets. Use matching cards: one card shows a big item and the matching card shows the same item small. Play a picture hunt: call out a size word and children find an object or picture that fits the word.
Use role play to make learning lively. One child can pretend to be a giant (big and tall) while another acts as a mouse (small and short). Use movement activities: ask children to run to the 'big' corner or the 'small' corner when you call out a word. Keep activities short so children remain focused and happy.
Include drawing and colouring: ask children to draw the biggest thing they know and the smallest thing they know, then say one sentence about each. Use stickers as small rewards for good effort. Use pair work so every child speaks and listens. Regular play and repetition help size words become part of daily speech and help children describe the world with confidence and joy.