Week 2 · Unit 1 I feel happy! (B): phonics ea, writing about feelings, healthy habits, measuring and bar charts · 3 lessons
3
Measure it and count it
Connect P3 Term 1: Unit 1
GoalMeasure in millimetres and centimetres and read a bar chart.
New words
millimetre · a very small unit of length (mm)centimetre · a unit of length: 10 millimetres (cm)ruler · a tool for measuring lengthbar chart · a picture that uses bars to show numberslongest · the one with the greatest length
Explanation
We measure how long things are with a ruler. Small things are measured in millimetres (mm). Bigger things are measured in centimetres (cm). 10 millimetres make 1 centimetre. Put the zero of the ruler at one end of the thing. Read the number at the other end. We ask: How long is it? We answer: It is 6 centimetres long. A bar chart shows how many. The taller the bar, the bigger the number.
Worked examples
Mariam
How long is your pencil, Karim?
Karim
It is 12 centimetres long. How long is yours?
Mariam
Mine is 9 centimetres long. Yours is longer.
Karim
Yes. It is 3 centimetres longer.
Listen. Karim and Mariam measure their pencils.
Look at the bar chart. How many children feel happy? How many feel tired?
Class 3B asks: How do you feel today? Eight children feel happy. Three children feel tired. Five children feel hungry. Two children feel sad. The tallest bar is happy.
Read and listen to the text.
Now you. Measure a pencil with a ruler. Say: It is … centimetres long.
Class activity
Measure and chart. The child measures five things at home with a ruler: a pencil, a book, a spoon, a shoe, a phone. Write each: My pencil is … cm long. Then draw a bar chart with five bars. Which thing is the longest?
Practice
1
Look. How long is the line?
8 centimetres.
2
Look at the bar chart. Which bar is the tallest?
rice.
3
Fill in: 10 millimetres = ___ centimetre.
1.
4
Fill in: The pencil is 12 cm. The rubber is 4 cm. The pencil is ___ cm longer. (8 or 16)
